{"id":"CVE-2026-110596","published":"2026-10-14T15:17:10.797","lastModified":"2026-10-16T19:18:44.867","description":"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.","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-834"],"vendors":[],"products":[],"references":[{"url":"https://github.com/dlbeer/quirc/blob/542848dd6b9b0eaa9587bbf25b9bc67bd8a71fca/lib/identify.c#L578-L636","tags":[]},{"url":"https://github.com/dlbeer/quirc/issues/162","tags":[]},{"url":"https://github.com/dlbeer/quirc/pull/159","tags":[]},{"url":"https://hackmd.io/@haind-pwn/quirc-alignment-pattern-infinite-loop-dos","tags":[]},{"url":"https://www.vulncheck.com/advisories/quirc-through-1.2-denial-of-service-via-find-alignment-pattern-spiral-search","tags":[]}],"exploitRefs":[{"url":"https://github.com/dlbeer/quirc/blob/542848dd6b9b0eaa9587bbf25b9bc67bd8a71fca/lib/identify.c#L578-L636","tags":[]},{"url":"https://github.com/dlbeer/quirc/issues/162","tags":[]},{"url":"https://github.com/dlbeer/quirc/pull/159","tags":[]}],"hasPoc":true,"ai":null}