CVE-2026-110596

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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/dlbeer/quirc/blob/542848dd6b9b0eaa9587bbf25b9bc67bd8a71fca/lib/identify.c#L578-L636
https://github.com/dlbeer/quirc/issues/162
https://github.com/dlbeer/quirc/pull/159
https://hackmd.io/@haind-pwn/quirc-alignment-pattern-infinite-loop-dos
https://www.vulncheck.com/advisories/quirc-through-1.2-denial-of-service-via-find-alignment-pattern-spiral-search

Configurations

No configuration.

History

14 Oct 2026, 15:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-14 15:17

Updated : 2026-10-20 01:17

NVD link : CVE-2026-110596

Mitre link : CVE-2026-110596

CVE.ORG link : CVE-2026-110596

JSON object : View

Products Affected

No product.

CWE

CWE-834

Excessive Iteration

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