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TI-2026-74090 Aliases CVE-2026-110596GHSA-fjm5-xm8f-3gjj

Denial of service in quirc QR decoder via alignment pattern search

Priority LOW 29CWE-834Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

quirc through 1.2 contains an excessive-iteration flaw (CWE-834) in find_alignment_pattern() in lib/identify.c. Three arranged finder patterns produce a near-degenerate perspective transform that causes billions of region_code() iterations. A local attacker with no privileges needs a user to decode a crafted image, which hangs quirc_end() and exhausts CPU in applications that decode attacker-supplied QR images.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00163 5th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
dlbeerquircup to 1.2—No fix listedCNA
  • quirc Vendordlbeer Affected up to 1.2 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for quirc.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-14 Threatist record created from CVE-2026-110596
  2. 2026-10-14 Alias added: GHSA-fjm5-xm8f-3gjj
  3. 2026-10-16 Priority changed: MEDIUM → LOW
  4. 2026-10-18 Affected versions changed · Red Hat
  5. 2026-10-18 CVSS score added · Red Hat
  6. 2026-10-20 CISA SSVC decision points changed

References

Patch 1

Advisory 1

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences