Stack-based buffer overflow in Libextractor - CVE-2026-91752
Published: September 21, 2026
Vulnerability identifier: #VU151515
CSH Severity: High
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-91752
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to a stack-based buffer overflow in the process_star_office function of the OLE2 plugin when processing attacker-controlled OLE2 stream data. A remote attacker can provide a crafted StarOffice document to execute arbitrary code.
This condition requires a multi-threaded context using EXTRACTOR_OPTION_IN_PROCESS.
Affected software
Libextractor
How to mitigate CVE-2026-91752
Install security update from vendor's website.
Libextractor - update to 1.15