Vulnerability in GNU Libextractor
CVE-2026-91752
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.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
Weakness classification (CWE)
References
- disclosure@vulncheck.com (exploit, third-party-advisory)
- disclosure@vulncheck.com (patch)
- disclosure@vulncheck.com (patch)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-91752?
- CVE-2026-91752 is a high-severity vulnerability in GNU Libextractor, classified under CWE-789. CVSS score: 7.5/10. Published 2026-09-15.
- How severe is CVE-2026-91752?
- High severity. CVSS v3 base score is 7.5 out of 10.