Fallow: Jest and Vitest `projects` entries let an analyzed repository make Fallow read files outside the project root

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-115569
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-23 19:17:44 UTC
Updated2026-10-23 19:57:42 UTC
DescriptionFallow 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.

Risk And Classification

Primary CVSS: v3.1 3.3 LOW from [email protected]

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Problem Types: CWE-22 | CWE-59 | CWE-22 CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | CWE-59 CWE-59: Improper Link Resolution Before File Access ('Link Following')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary3.3LOWCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
3.1CNADECLARED3.3LOWCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Fallow-rs Fallow affected >= 2.68.0, < 3.34.0 Not specified
CNA @fallow-cli Fallow-node affected >= 2.68.0, < 3.34.0 Not specified
CNA Fallow-rs Fallow-cli affected >= 2.68.0, < 3.34.0 Not specified
CNA Fallow-rs Fallow-core affected >= 2.68.0, < 3.34.0 Not specified

References

ReferenceSourceLinkTags
github.com/fallow-rs/fallow/security/advisories/GHSA-jfwm-3p3c-6hx5 [email protected] github.com
github.com/fallow-rs/fallow/commit/75c0c60948a53ddfe042e65b446343989f4c5649 [email protected] github.com
github.com/fallow-rs/fallow/pull/3556 [email protected] github.com
github.com/fallow-rs/fallow/releases/tag/v3.34.0 [email protected] github.com
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