CVEvulnerability
CVE-2026-110596
6.8 MEDIUM
Official page ↗
- Status
- Deferred
- Published
- 2026-10-14
- Last modified
- 2026-10-20
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 6.8 MEDIUM — 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-834
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.
Related
Weakness · CWE (1)
- CWE-834 Excessive Iteration weakness
References
- https://github.com/dlbeer/quirc/blob/542848dd6b9b0eaa9587bbf25b9bc67bd8a71fca/lib/identify.c#L578-L636 github.com
- https://github.com/dlbeer/quirc/issues/162 github.com
- https://github.com/dlbeer/quirc/pull/159 github.com
- https://hackmd.io/@haind-pwn/quirc-alignment-pattern-infinite-loop-dos hackmd.io
- https://www.vulncheck.com/advisories/quirc-through-1.2-denial-of-service-via-find-alignment-pattern-spiral-search www.vulncheck.com