{"id":"CVE-2026-88341","aliases":["DEBIAN-CVE-2026-88341","EUVD-2026-84850","GHSA-q333-36q9-7h8m","UBUNTU-CVE-2026-88341"],"status":"published","title":"A reachable assertion vulnerability exists in YARA 4.5.8 when loading crafted .yrc compiled rule...","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.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00151,"percentile":0.04255,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-617"],"published":"2026-09-22T00:00:00Z","modified":"2026-10-28T11:19:20Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"yara","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2.3-4","4.3.0-1","4.3.2-1","4.4.0-1","4.5.0-1","4.5.0-1~bpo12+1","4.5.1-1","4.5.1-1~bpo12+1","4.5.2-1","4.5.2-1~bpo12+1","4.5.3-1","4.5.4-1","4.5.5-1","4.5.6-1","4.5.7-1","4.5.8-1"]},{"source":"osv","ecosystem":"Debian:13","package":"yara","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.5.2-1","4.5.3-1","4.5.4-1","4.5.5-1","4.5.6-1","4.5.7-1","4.5.8-1"]},{"source":"osv","ecosystem":"Debian:14","package":"yara","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.5.2-1","4.5.3-1","4.5.4-1","4.5.5-1","4.5.6-1","4.5.7-1","4.5.8-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"yara","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.0+dfsg-2","3.4.0+dfsg-2build1","3.4.0+dfsg-2ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"yara","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.3+dfsg-1ubuntu1","3.7.1-1ubuntu1","3.7.1-1ubuntu2","3.7.1-1ubuntu2+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"yara","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.9.0-1","3.9.0-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"yara","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.1.0-1","4.1.3-1","4.1.3-1build1","4.1.3-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"yara","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.3.2-1","4.4.0-1","4.5.0-1","4.5.0-1build1","4.5.0-1build2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"yara","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.5.5-1","4.5.7-1","4.5.8-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"yara","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.5.4-1","4.5.5-1"]}],"references":[{"url":"https://github.com/VirusTotal/yara/issues/2238","tags":["exploit","report"]},{"url":"https://github.com/NOUIY/yara/commit/0cdff36723cd260243bb2b330bda555693354760","tags":["fix","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88341","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-q333-36q9-7h8m"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/88xxx/CVE-2026-88341.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-88341","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-88341","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-88341","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-88341","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.","status":"published","published":"2026-09-22T00:00:00Z","modified":"2026-09-23T15:00:34.854Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"adp"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T13:41:53.237769Z"}],"euvd":[{"id":"EUVD-2026-84850","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.","status":"published","published":"2026-09-22T00:00:00Z","modified":"2026-09-23T15:00:34Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T17:28:00.617613Z"}],"ghsa":[{"id":"GHSA-q333-36q9-7h8m","title":"A reachable assertion vulnerability exists in YARA 4.5.8 when loading crafted .yrc compiled rule...","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.","status":"published","published":"2026-09-22T21:31:29Z","modified":"2026-09-23T15:30:43Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T15:12:20.494129Z"}],"nvd":[{"id":"CVE-2026-88341","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.","status":"published","published":"2026-09-22T20:17:10.37Z","modified":"2026-09-24T21:08:22.573Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:12:50.703874Z"}],"osv":[{"id":"CVE-2026-88341","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.","status":"published","published":"2026-09-22T00:00:00Z","modified":"2026-10-28T11:19:20.885250269Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:19.210277Z"},{"id":"DEBIAN-CVE-2026-88341","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.","status":"published","published":"2026-09-22T20:17:10.37Z","modified":"2026-09-25T08:47:22.639105905Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:46:05.506112Z"},{"id":"UBUNTU-CVE-2026-88341","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.","status":"published","published":"2026-09-22T20:17:00Z","modified":"2026-10-17T13:01:15.789344267Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:57:24.828975Z"}]}}