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.
Published: 2026-10-14
Score: 6.8 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 14 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
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.
Title quirc through 1.2 Denial of Service via find_alignment_pattern Spiral Search
Weaknesses CWE-834
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6.8, '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'}

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-14T14:16:39.681Z

Reserved: 2026-10-14T13:07:18.898Z

Link: CVE-2026-110596

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-14T15:17:10.797

Modified: 2026-10-14T15:17:10.797

Link: CVE-2026-110596

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses