Threats affecting pkg:npm/compressing

CVE-2026-40931 is a high-severity vulnerability in the node-modules compressing library affecting versions prior to 2.1.1 and 1.10.5. It involves improper link resolution before file access, where a logical path validation check fails to consider the actual filesystem state, allowing attackers to bypass security checks via directory poisoning using pre-existing symbolic links. This can lead to unauthorized file access and potential compromise of confidentiality, integrity, and availability. The vulnerability has been fixed in versions 2.1.1 and 1.

CVE-2026-24884 is a high-severity vulnerability in the node-modules 'compressing' library versions 2.0.0 and prior to 1.10.4. The flaw involves improper link resolution during TAR archive extraction, where symbolic links are restored without validating their targets. This allows attackers to craft archives with symlinks pointing outside the intended extraction directory, enabling arbitrary file writes or overwrites on the host system. Exploitation can lead to full confidentiality, integrity, and availability compromise without requiring authentication or user interaction. The vulnerability has been patched in versions 1.10.