CVE-2026-75148 PUBLISHED

cgltf 1.15 Integer Overflow via cgltf_validate() Accessor Bounds Check

Assigner: VulnCheck
Reserved: 17.08.2026 Published: 19.08.2026 Updated: 19.08.2026

cgltf through 1.15 contains an integer overflow vulnerability in the non-sparse accessor bounds check within cgltf_validate() that allows remote attackers to cause memory disclosure and denial of service by supplying crafted accessor count values. Attackers can provide malformed .gltf or .glb input with a specially crafted accessor count to overflow the unsigned integer multiplication of accessor stride and element count, causing the bounds check to pass and triggering a heap out-of-bounds read when cgltf_accessor_read_float() is subsequently called on the validated malformed accessor.

Metrics

CVSS Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS Score: 6.9

Product Status

Vendor jkuhlmann
Product cgltf
Versions Default: affected
  • affected from 0 to 1.15 (incl.)

Credits

  • Asilbek Muhammadiyev finder

References

Problem Types

  • Integer Overflow or Wraparound CWE