CVE-2026-91752GNU libextractor before 1.15 Stack Overflow via OLE2
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-789
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
GNU libextractor gnu:libextractor (from the name) | before 1.15 | CNA record |
References
- https://github.com/Haitam-lazaar/libextractor-ole2-rceexploit, third-party-advisory
- https://git.gnunet.org/gnunet/libextractor/commit/04004eb19033e093938138b09befdf31e71e8522.htmlpatch
- https://git.gnunet.org/gnunet/libextractor/commit/2781c7e9095f4ddaff4f535d69342f3903b18422.htmlpatch
- https://www.gnu.org/software/libextractor/product
- https://www.vulncheck.com/advisories/gnu-libextractor-before-1.15-stack-overflow-via-ole2third-party-advisory
- http://www.openwall.com/lists/oss-security/2026/09/16/16
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.