{"id":"CVE-2026-110596","summary":"quirc through 1.2 Denial of Service via find_alignment_pattern Spiral Search","details":"quirc through 1.2 contains an excessive-iteration vulnerability in find_alignment_pattern() in lib/identify.c that allows attackers to hang quirc_end() with a crafted image. Attackers can arrange three finder patterns producing a near-degenerate perspective transform, causing billions of region_code() iterations that exhaust CPU in applications decoding attacker-supplied QR images.","modified":"2026-10-15T02:47:23.728025705Z","published":"2026-10-14T14:16:39.681Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-834"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110596.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110596.json"},{"type":"PACKAGE","url":"https://github.com/dlbeer/quirc"},{"type":"ARTICLE","url":"https://github.com/dlbeer/quirc/blob/542848dd6b9b0eaa9587bbf25b9bc67bd8a71fca/lib/identify.c#L578-L636"},{"type":"REPORT","url":"https://github.com/dlbeer/quirc/issues/162"},{"type":"FIX","url":"https://github.com/dlbeer/quirc/pull/159"},{"type":"ADVISORY","url":"https://hackmd.io/@haind-pwn/quirc-alignment-pattern-infinite-loop-dos"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110596"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/quirc-through-1.2-denial-of-service-via-find-alignment-pattern-spiral-search"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/dlbeer/quirc","events":[{"introduced":"0"},{"last_affected":"542848dd6b9b0eaa9587bbf25b9bc67bd8a71fca"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"1.2"}],"source":"AFFECTED_FIELD"}}],"versions":["v1.2","v1.1","v1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-110596.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}