CVE-2026-91752CWE-789

CVE-2026-91752

High · published September 15, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
54.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00740 · 54.1th percentile
Weakness
CWE-789 · Memory Allocation with Excessive Size Value
Published
2026-09-15T05:16Z
References (6)
https://git.gnunet.org/gnunet/libextractor/commit/04004eb19033e093938138b09befdf31e71e8522.html · [email protected]https://git.gnunet.org/gnunet/libextractor/commit/2781c7e9095f4ddaff4f535d69342f3903b18422.html · [email protected]https://github.com/Haitam-lazaar/libextractor-ole2-rce · [email protected]https://www.gnu.org/software/libextractor/ · [email protected]https://www.vulncheck.com/advisories/gnu-libextractor-before-1.15-stack-overflow-via-ole2 · [email protected]http://www.openwall.com/lists/oss-security/2026/09/16/16 · af854a3a-2127-422b-91ae-364da2661108
EPSS history
Timeline
  • 18 SEP 04:02Z
    EPSS moved — → 0%
    epss
  • 15 SEP 00:35Z
    GNU libextractor before 1.15 Stack Overflow via OLE2
    cvelistv5