{"dataType": "CVE_RECORD", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2026-88341", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2026-09-22T19:45:10.408Z", "dateReserved": "2026-09-10T00:00:00.000Z", "datePublished": "2026-09-22T00:00:00.000Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-09-22T19:45:10.408Z"}, "descriptions": [{"lang": "en", "value": "A reachable assertion vulnerability exists in YARA 4.5.8 when loading crafted .yrc compiled rule files. An attacker can provide a malicious file with an invalid arena configuration (num_buffers=0) that triggers an assertion failure in yr_arena_get_ptr(), causing the application to terminate."}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "https://github.com/VirusTotal/yara/issues/2238"}, {"url": "https://github.com/NOUIY/yara/commit/0cdff36723cd260243bb2b330bda555693354760"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}]}}, "dataVersion": "5.2"}

{}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A reachable assertion vulnerability exists in YARA 4.5.8 when loading crafted .yrc compiled rule files. An attacker can provide a malicious file with an invalid arena configuration (num_buffers=0) that triggers an assertion failure in yr_arena_get_ptr(), causing the application to terminate."}], "id": "CVE-2026-88341", "lastModified": "2026-09-22T20:17:10.370", "metrics": {}, "published": "2026-09-22T20:17:10.370", "references": [{"source": "cve@mitre.org", "url": "https://github.com/NOUIY/yara/commit/0cdff36723cd260243bb2b330bda555693354760"}, {"source": "cve@mitre.org", "url": "https://github.com/VirusTotal/yara/issues/2238"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Received"}

{}

{"created": "2026-09-22T22:00:08.578320+00:00", "title": "Assertion Failure in YARA 4.5.8 Causes Crash with Malicious .yrc Files", "updated": "2026-09-22T22:00:08.578327+00:00", "vendors": [], "weaknesses": ["CWE-20"]}