{"id":"CVE-2026-111274","title":"unarr through 1.1.1 Heap Out-of-Bounds Read via zip_parse_extra_fields","summary":"unarr through 1.1.1 contains a heap-based out-of-bounds read in zip_parse_extra_fields() in zip/parse-zip.c due to an incorrect ZIP64 extra field length check. Attackers can supply a crafted ZIP archive with 0xFFFFFFFF sentinel values an…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-125"],"vendor":"selmf","product":"unarr","affected":["unarr <= 1.1.1"],"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-23T19:58:38.162845Z"},"exploitAvailable":true,"published":"2026-10-15","updated":"2026-11-02","sourceUpdated":"2026-11-02T02:21:48.872Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111274","references":[{"url":"https://github.com/selmf/unarr/security/advisories/GHSA-qm4g-jf39-jwjj","label":"GitHub Security Advisory (GHSA-qm4g-jf39-jwjj)"},{"url":"https://github.com/selmf/unarr/releases/tag/v1.2.0","label":"Release Notes"},{"url":"https://hackmd.io/@haind-pwn/unarr-tar-zip-oob"},{"url":"https://www.vulncheck.com/advisories/unarr-through-1.1.1-heap-out-of-bounds-read-via-zip-parse-extra-fields","label":"VulnCheck Advisory: unarr through 1.1.1 Heap Out-of-Bounds Read via zip_parse_extra_fields"},{"url":"https://github.com/selmf/unarr/blob/b211040df83dee513362cdeb9bd87afa26fd5e38/zip/parse-zip.c#L48-L72"},{"url":"https://github.com/selmf/unarr"}],"tags":["cve.org","exploit-available"],"epss":0.00196,"epssPercentile":0.09389,"ingestedAt":"2026-10-15T22:48:25.447Z","slug":"CVE-2026-111274","body":"## Overview\n\nunarr through 1.1.1 contains a heap-based out-of-bounds read in zip_parse_extra_fields() in zip/parse-zip.c due to an incorrect ZIP64 extra field length check. Attackers can supply a crafted ZIP archive with 0xFFFFFFFF sentinel values and a truncated ZIP64 record to read past the heap buffer and crash the process.\n\n## Affected\n\n- `unarr <= 1.1.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":228355,"id":"CVE-2026-111274","ts":1792787859280,"field":"exploit_available","old":"false","new":"true"}]}