CVE-2026-100310: GNU Libextractor

High severity, CVSS 7.0. EPSS: 0.1% chance of exploitation in the next 30 days.

GNU libextractor before 1.16 loads plugins from an untrusted search path specified by the LIBEXTRACTOR_PREFIX environment variable without proper privilege checks. A local attacker can exploit this by setting LIBEXTRACTOR_PREFIX to a directory containing a malicious plugin that executes arbitrary code with elevated privileges when loaded by a setuid or setgid program.

Affected products

• GNU Libextractor: before 1.16 (fixed in 1.16)

Published 2026-09-25. Last modified 2026-09-30.