{"id":"CVE-2026-110596","revision":"90733daef1224d3c9bd1925e073b2ec4","records":[{"revision":"90733daef1224d3c9bd1925e073b2ec4","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-110596","aliases":[],"title":"quirc through 1.2 Denial of Service via find_alignment_pattern Spiral Search","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.","state":0,"publishedAt":"2026-10-14T14:16:39.681+00:00","modifiedAt":"2026-10-20T01:02:45.791+00:00","affected":[{"ecosystem":"Vendor product","name":"quirc","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"dlbeer\",\n                    \"product\": \"quirc\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"1.2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:github/dlbeer/quirc\",\n                    \"repo\": \"https://github.com/dlbeer/quirc\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"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","score":6.8,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","score":5.5,"severity":"MEDIUM"}],"references":["https://github.com/dlbeer/quirc/pull/159","https://github.com/dlbeer/quirc/issues/162","https://hackmd.io/@haind-pwn/quirc-alignment-pattern-infinite-loop-dos","https://github.com/dlbeer/quirc/blob/542848dd6b9b0eaa9587bbf25b9bc67bd8a71fca/lib/identify.c#L578-L636","https://www.vulncheck.com/advisories/quirc-through-1.2-denial-of-service-via-find-alignment-pattern-spiral-search"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-110596","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-110596","identifiers":["CVE-2026-110596"]},"retained":false,"historicalAffected":[]}],"coverage":[]}