{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-91752", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-09-14T23:08:43.492Z", "datePublished": "2026-09-15T00:35:43.518Z", "dateUpdated": "2026-09-15T00:35:43.518Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-09-15T00:35:43.518Z"}, "datePublic": "2026-07-05T00:00:00.000Z", "title": "GNU libextractor before 1.15 Stack Overflow via OLE2", "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Memory Allocation with Excessive Size Value", "cweId": "CWE-789", "type": "CWE"}]}], "affected": [{"vendor": "GNU", "product": "libextractor", "defaultStatus": "unaffected", "versions": [{"version": "0", "lessThan": "1.15", "status": "affected", "versionType": "custom"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:gnu:libextractor:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.15"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "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", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH"}}], "references": [{"url": "https://github.com/Haitam-lazaar/libextractor-ole2-rce", "tags": ["exploit", "third-party-advisory"]}, {"url": "https://git.gnunet.org/gnunet/libextractor/commit/04004eb19033e093938138b09befdf31e71e8522.html", "tags": ["patch"]}, {"url": "https://git.gnunet.org/gnunet/libextractor/commit/2781c7e9095f4ddaff4f535d69342f3903b18422.html", "tags": ["patch"]}, {"url": "https://www.gnu.org/software/libextractor/", "tags": ["product"]}, {"name": "VulnCheck Advisory: GNU libextractor before 1.15 Stack Overflow via OLE2", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/gnu-libextractor-before-1.15-stack-overflow-via-ole2"}], "credits": [{"lang": "en", "value": "Haitam Lazaar", "type": "reporter"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

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{}

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