CVE-2026-112019
cgltf through 1.15 Heap Out-of-Bounds Read via cgltf_accessor_unpack_floats()
- State
- Published
- Severity
- 6.9 Medium
- Published
- Oct 18, 2026
- Updated
- Oct 20, 2026
- Reserved
- Oct 18, 2026
Description
cgltf through 1.15 contains a heap out-of-bounds read vulnerability in cgltf_accessor_unpack_floats() that advances the sparse values cursor by the base bufferView byteStride. Attackers can supply a crafted glTF or GLB file that passes cgltf_validate() to read adjacent heap memory into vertex data or crash applications.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | 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 | VulnCheck |
| 3.1 | 6.1 Medium | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H | VulnCheck |
Weaknesses
- CWE-125 Out-of-bounds Read
Affected Products
| Product | Versions |
|---|---|
cgltfjkuhlmann |
|
References
- https://hackmd.io/@haindpwn/cgltf-accessor-unpack-floats-sparse-oobtechnical-description
- https://github.com/jkuhlmann/cgltf/blob/360db1a95480fe102ae9c69b27c5d101167ff5ba/cgltf.h#L2436-L2441technical-description
- https://github.com/jkuhlmann/cgltf/blob/360db1a95480fe102ae9c69b27c5d101167ff5ba/cgltf.h#L1612-L1619technical-description
- https://github.com/jkuhlmann/cgltfproduct
- VulnCheck Advisory: cgltf through 1.15 Heap Out-of-Bounds Read via cgltf_accessor_unpack_floats()third-party-advisory
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