CVE-2026-40931: Improper Link Resolution Before File Access

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...

Compressing post-link vulnerabilities

Compressing is a compression and decompression tool library open sourced by nodemodules. Versions of compressing before 2.1.1 and 1.10.5 had a backlink vulnerability. This vulnerability stemmed from a flaw in the pure logical string validation within the isPathWithinParent tool, which failed to...

GHSA-4C3Q-X735-J3R5 Complete Bypass of CVE-2026-24884 Patch via Git-Delivered Symlink Poisoning in compressing

Executive Summary This report documents a critical security research finding in the compressing npm package specifically tested on the latest v2.1.0. The core vulnerability is a Partial Fix Bypass of CVE-2026-24884. The current patch relies on a purely logical string validation within the...

PT-2026-33550

Name of the Vulnerable Software and Affected Versions compressing versions prior to 1.10.5 compressing versions prior to 2.1.1 Description A patch bypass exists in the isPathWithinParent function located in lib/utils.js. The issue stems from a divergence between logical string validation and the...