CVE-2026-91752

High

Description

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.

SeverityHigh

CVSS7.5

Exploit probability—

Product

Gnu Libextractor

PublishedSep 15, 2026

First seenSep 15, 2026

Weakness typeCWE-789CWE-789

How to fix

Update

GNU libextractor1.15 or later

Patches

git.gnunet.org/gnunet/libextractor/commit/04004eb19033e093938138b09befdf31e71e8522.html
git.gnunet.org/gnunet/libextractor/commit/2781c7e9095f4ddaff4f535d69342f3903b18422.html

Affected products

Product	Affected versions	Fixed in
GNU libextractor	v < 1.15	1.15

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.