CVE-2026-115569 Fallow: Jest and Vitest `projects` entries let an analyzed repository make Fallow read files outside the project root
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-115569?
CVE-2026-115569 is a low-severity vulnerability in @fallow-cli fallow, published on 23 Oct 2026.
Official 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.
Which versions are affected by CVE-2026-115569?
8 open source packages ship an affected version, including @fallow-cli/fallow-node, fallow-cli and fallow-core.
| Package | Affected | Fixed in |
|---|---|---|
@fallow-cli/fallow-node npm | From 2.68.0 | 3.34.0 |
@fallow-cli/fallow-node npm | From 2.68.0 | 3.34.0 |
fallow-cli crates.io | From 2.68.0 | 3.34.0 |
fallow-cli crates.io | From 2.68.0 | 3.34.0 |
fallow-core crates.io | From 2.68.0 | 3.34.0 |
fallow-core crates.io | From 2.68.0 | 3.34.0 |
2 more packages
fallow npm | From 2.68.0 | 3.34.0 |
fallow npm | From 2.68.0 | 3.34.0 |
How do I fix CVE-2026-115569?
Upgrade @fallow-cli/fallow-node to 3.34.0 or later.
Is CVE-2026-115569 being exploited?
There is no known exploitation of CVE-2026-115569 in the wild and no public exploit code.
Sources
Also known as GHSA-jfwm-3p3c-6hx5.