CVE-2026-32845 MEDIUM

CVE-2026-32845: jkuhlmann / cgltf <= 1.15 Sparse Accessor Validation Integer Overflow

Vendor Jkuhlmann
Product cgltf
Weakness CWE-190
Published March 23, 2026
Last update March 31, 2026

CVSS base score

6.9/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 23, 2026 CVE published
March 31, 2026 Record updated