CVE-2026-110596CWE-834

CVE-2026-110596

Medium · published October 14, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
6.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
6.8 · 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
EPSS
0.00172 · 6.3th percentile
Weakness
CWE-834 · Excessive Iteration
Published
2026-10-14T19:17Z
References (5)
https://github.com/dlbeer/quirc/blob/542848dd6b9b0eaa9587bbf25b9bc67bd8a71fca/lib/identify.c#L578-L636 · [email protected]https://github.com/dlbeer/quirc/issues/162 · [email protected]https://github.com/dlbeer/quirc/pull/159 · [email protected]https://hackmd.io/@haind-pwn/quirc-alignment-pattern-infinite-loop-dos · [email protected]https://www.vulncheck.com/advisories/quirc-through-1.2-denial-of-service-via-find-alignment-pattern-spiral-search · [email protected]
EPSS history
Timeline
  • 16 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 14 OCT 14:16Z
    quirc through 1.2 Denial of Service via find_alignment_pattern Spiral Search
    cvelistv5
  • 14 OCT 14:16Z
    quirc through 1.2 Denial of Service via find_alignment_pattern Spiral Search
    cvelistv5