Compressing is a compressing and uncompressing lib for node. Prior to 2.1.1 and 1.10.5, the patch for CVE-2026-24884 relies on a purely logical string validation within the isPathWithinParent utility. This check verifies if a resolved path string starts with the destination directory string but fails to account for the actual filesystem state. By exploiting this "Logical vs. Physical" divergence, an attacker can bypass the security check using a Directory Poisoning technique (pre-existing symbolic links). This vulnerability is fixed in 2.1.1 and 1.10.5.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/node-modules/compressing/security/advisories/GHSA-4c3q-x735-j3r5 Exploit, Mitigation, Vendor Advisory
- https://github.com/node-modules/compressing/security/advisories/GHSA-4c3q-x735-j3r5 Exploit, Mitigation, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.8 · node-modulesNVD modified 2026-10-26 21:10
Affected (CPE criteria) 1
cpe:2.3:a:node-modules:compressing:*:*:*:*:*:node.js:*:*
References 2
- https://github.com/node-modules/compressing/security/advisories/GHSA-4c3q-x735-j3r5 Exploit, Mitigation, Vendor Advisory
- https://github.com/node-modules/compressing/security/advisories/GHSA-4c3q-x735-j3r5 Exploit, Mitigation, Vendor Advisory