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TI-2026-25308 Aliases CVE-2026-32845GHSA-5jxj-w72m-5c8f

jkuhlmann / cgltf <= 1.15 Sparse Accessor Validation Integer Overflow

Priority HIGH 66CWE-190Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-190 and the CVSS impact.

Summary

cgltf version 1.15 and prior contain an integer overflow vulnerability in the cgltf_validate() function when validating sparse accessors that allows attackers to trigger out-of-bounds reads by supplying crafted glTF/GLB input files with attacker-controlled size values. Attackers can exploit unchecked arithmetic operations in sparse accessor validation to cause heap buffer over-reads in cgltf_calc_index_bound(), resulting in denial of service crashes and potential memory disclosure.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0014 3rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
jkuhlmanncgltfup to 1.15.0—No fix listedCNA
  • cgltf Vendorjkuhlmann Affected up to 1.15.0 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-32845
  2. 2026-10-03 Alias added: GHSA-5jxj-w72m-5c8f

References

Exploit 1

Patch 1

  • TI-2026-76170 Heap out-of-bounds write in cgltf accessor unpacking CVSS 4.0HIGH 7.3
  • TI-2026-76171 Heap out-of-bounds read in cgltf accessor unpacking CVSS 4.0MEDIUM 6.9
  • TI-2026-52801 cgltf 1.15 Integer Overflow via cgltf_validate() Accessor Bounds Check CVSS 4.0MEDIUM 6.9

Sources

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