CVE-2026-91752
GNU libextractor before 1.15 Stack Overflow via OLE2
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-789 |
| Vendor | gnu |
| Product | libextractor |
| Published | Sep 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
GNU / libextractor
0 < 1.15
References
github.com: https://github.com/Haitam-lazaar/libextractor-ole2-rce git.gnunet.org: https://git.gnunet.org/gnunet/libextractor/commit/04004eb19033e093938138b09befdf31e71e8522.html git.gnunet.org: https://git.gnunet.org/gnunet/libextractor/commit/2781c7e9095f4ddaff4f535d69342f3903b18422.html gnu.org: https://www.gnu.org/software/libextractor/ vulncheck.com: https://www.vulncheck.com/advisories/gnu-libextractor-before-1.15-stack-overflow-via-ole2
Credits
🔍 Haitam Lazaar