CVE-2026-91752: GNU Libextractor

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

GNU libextractor before 1.15 contains a stack-based buffer overflow vulnerability in the process_star_office function that sizes a variable-length stack array from attacker-controlled OLE2 stream data. Attackers can craft malicious StarOffice documents that allocate up to 4 MB on the stack, causing stack overflow and crashing any application extracting metadata from the document.

Affected products

• GNU Libextractor: before 1.15 (fixed in 1.15)

Published 2026-09-15. Last modified 2026-09-24.