Medium severity5.5NVD Advisory· Published Oct 14, 2026
CVE-2026-110596
CVE-2026-110596
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.
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Affected products
1Patches
Vulnerability mechanics
References
5- github.com/dlbeer/quirc/blob/542848dd6b9b0eaa9587bbf25b9bc67bd8a71fca/lib/identify.cnvd
- github.com/dlbeer/quirc/issues/162nvd
- github.com/dlbeer/quirc/pull/159nvd
- hackmd.io/@haind-pwn/quirc-alignment-pattern-infinite-loop-dosnvd
- www.vulncheck.com/advisories/quirc-through-1.2-denial-of-service-via-find-alignment-pattern-spiral-searchnvd
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