{"id":"CVE-2026-88341","published":"2026-09-22T20:17:10.370","lastModified":"2026-09-24T21:08:22.573","description":"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.","cvssScore":5.5,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwes":["CWE-617"],"vendors":[],"products":[],"references":[{"url":"https://github.com/NOUIY/yara/commit/0cdff36723cd260243bb2b330bda555693354760","tags":[]},{"url":"https://github.com/VirusTotal/yara/issues/2238","tags":[]},{"url":"https://github.com/VirusTotal/yara/issues/2238","tags":[]}],"exploitRefs":[{"url":"https://github.com/NOUIY/yara/commit/0cdff36723cd260243bb2b330bda555693354760","tags":[]},{"url":"https://github.com/VirusTotal/yara/issues/2238","tags":[]},{"url":"https://github.com/VirusTotal/yara/issues/2238","tags":[]}],"hasPoc":true,"ai":null}