CVE-2026-100310

GNU libextractor before 1.16 Privilege Escalation via LIBEXTRACTOR_PREFIX

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

GNU · libextractor

CVSS v4.0 VULNCHECK

7.3 HIGHCVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 VULNCHECK

7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.14% chance of exploitation in the next 30 days, 3rd percentile

Published

2026-09-25

Updated

2026-09-30

Proof-of-concept exploits (1)

• Haitam-lazaar/libextractor-privesc0★ · 2026-09-25

References

• CVE Record
• NVD entry

Related

• CVE-2026-91752