CVE-2026-112018
cgltf through 1.15 Heap Out-of-Bounds Write via cgltf_accessor_unpack_floats()
CVSS Score
7.0
EPSS Score
0.0%
EPSS Percentile
0th
cgltf through 1.15 contains a heap out-of-bounds write vulnerability in cgltf_accessor_unpack_floats() that allows attackers to write outside the output buffer via unchecked sparse accessor indices. Attackers can supply a crafted glTF or GLB file with large sparse indices to corrupt heap memory, crash applications, and potentially execute code when cgltf_validate() is not called.
| CWE | CWE-787 |
| Vendor | jkuhlmann |
| Product | cgltf |
| Published | Oct 18, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
jkuhlmann / cgltf
0 ≤ 1.15
References
hackmd.io: https://hackmd.io/@haindpwn/cgltf-accessor-unpack-floats-sparse-oob github.com: https://github.com/jkuhlmann/cgltf/blob/360db1a95480fe102ae9c69b27c5d101167ff5ba/cgltf.h#L2436-L2441 github.com: https://github.com/jkuhlmann/cgltf vulncheck.com: https://www.vulncheck.com/advisories/cgltf-through-1.15-heap-out-of-bounds-write-via-cgltf-accessor-unpack-floats
Credits
HaiND from the Post and Telecommunication Institute of Technology