{"id":"CVE-2026-91752","title":"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","summary":"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 StarO…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-789"],"vendor":"GNU","product":"libextractor","affected":["libextractor < 1.15"],"published":"2026-09-15","updated":"2026-09-17","sourceUpdated":"2026-09-17T20:18:53.570","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-91752","references":[{"url":"https://git.gnunet.org/gnunet/libextractor/commit/04004eb19033e093938138b09befdf31e71e8522.html","label":"disclosure@vulncheck.com"},{"url":"https://git.gnunet.org/gnunet/libextractor/commit/2781c7e9095f4ddaff4f535d69342f3903b18422.html","label":"disclosure@vulncheck.com"},{"url":"https://github.com/Haitam-lazaar/libextractor-ole2-rce","label":"disclosure@vulncheck.com"},{"url":"https://www.gnu.org/software/libextractor/","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/gnu-libextractor-before-1.15-stack-overflow-via-ole2","label":"disclosure@vulncheck.com"},{"url":"http://www.openwall.com/lists/oss-security/2026/09/16/16","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-91752.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-91752"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-91752"}],"tags":["nvd","cve.org","exploit-available","csaf","vex","red-hat"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-17T18:37:51.070693Z"},"epss":0.00415,"epssPercentile":0.35517,"ingestedAt":"2026-09-15T01:18:29.937Z","slug":"CVE-2026-91752","body":"## Overview\n\nGNU 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · updated 2026-09-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-91752.json)","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":206544,"id":"CVE-2026-91752","ts":1789676922797,"field":"exploit_available","old":"false","new":"true"}]}