Vulnerability Description
Fallow is a codebase intelligence tool for TypeScript and JavaScript. From 2.68.0 until 3.34.0, Fallow follows attacker-controlled Jest projects paths outside the project root through absolute paths, parent segments, dot-prefixed wildcard globs, or symlinks. In version 3.33.1, the same behavior also affects Vitest test.projects paths, Vitest inline-project extends paths, and symlinked script --config paths. Fallow parses the outside files as test-runner configuration and uses them to credit dependencies, setup files, and JSX import sources, which can change unused dependency and unused file findings in CI or agent analysis. The outside file contents are not printed or sent over the network. This issue is fixed in version 3.34.0.
CVSS Score
LOW
Related Weaknesses (CWE)
References
- https://github.com/fallow-rs/fallow/commit/75c0c60948a53ddfe042e65b446343989f4c5
- https://github.com/fallow-rs/fallow/pull/3556
- https://github.com/fallow-rs/fallow/releases/tag/v3.34.0
- https://github.com/fallow-rs/fallow/security/advisories/GHSA-jfwm-3p3c-6hx5
FAQ
What is CVE-2026-115569?
CVE-2026-115569 is a vulnerability with a CVSS score of 3.3 (LOW). Fallow is a codebase intelligence tool for TypeScript and JavaScript. From 2.68.0 until 3.34.0, Fallow follows attacker-controlled Jest projects paths outside the project root through absolute paths, ...
How severe is CVE-2026-115569?
CVE-2026-115569 has been rated LOW with a CVSS base score of 3.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-115569?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.