CVE-2026-75148 cgltf 1.15 Integer Overflow via cgltf_validate() Accessor Bounds Check
Remote attackers can cause memory disclosure and denial of service by supplying crafted glTF files with malformed accessor counts that trigger an integer overflow.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-75148?
CVE-2026-75148 is a medium-severity vulnerability in jkuhlmann cgltf, published on 19 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-190
Which versions are affected by CVE-2026-75148?
How do I fix CVE-2026-75148?
No fix has been published for CVE-2026-75148 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-75148 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-75148 exists.
Sources
Also known as GHSA-5hg3-rg59-9qg4.