CVE-2021-23518
Prototype Pollution
CRITICAL 9.8EPSS 1.9%
The package cached-path-relative before 1.1.0 are vulnerable to Prototype Pollution via the cache variable that is set as {} instead of Object.create(null) in the cachedPathRelative function, which allows access to the parent prototype properties when the object is used to create the cached relative path. When using the origin path as __proto__, the attribute of the object is accessed instead of a path. **Note:** This vulnerability derives from an incomplete fix in https://security.snyk.io/vuln/SNYK-JS-CACHEDPATHRELATIVE-72573
- Affected
- cached-path-relative
- CVSS v3.1 NVD
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS v3.1 SNYK
- 7.3 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L - CVSS v2.0 NVD
- 7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P - EPSS
- 1.94% chance of exploitation in the next 30 days, 80th percentile
- Published
- 2022-01-21
- Updated
- 2024-09-16
Proof-of-concept exploits (2)
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-2348246
- https://snyk.io/vuln/SNYK-JS-CACHEDPATHRELATIVE-2342653
Security advisories
- ashaffer/cached-path-relative/commit/40c73bf70c58add5aec7d11e4f36b93d144bb760
- https://lists.debian.org/debian-lts-announce/2022/12/msg00006.html
- advisories/GHSA-wg6g-ppvx-927h