CVE-2026-112018
cgltf through 1.15 Heap Out-of-Bounds Write via cgltf_accessor_unpack_floats()
jkuhlmann cgltf
CVSS
7.3HighExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 19 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.13%Chance of exploitation activity in the next 30 days, higher than 2% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
Description
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.
Text from CVE List
Affected versions 1
- cgltfaffected: all versions through 1.15CVE List
References 5
- vulncheck.com/advisories/cgltf-through-1.15-heap-out-of-bounds-write-via-cgltf-accessor-unpack-floatsAdvisoryvia CVE List
- hackmd.io/@haindpwn/cve-2026-112018-112019-cgltf-accessor-unpack-floats-sparse-oobExploitvia CVE List
- hackmd.io/@haindpwn/cgltf-accessor-unpack-floats-sparse-oobReferencevia CVE List
- github.com/jkuhlmann/cgltf/blob/360db1a95480fe102ae9c69b27c5d101167ff5ba/cgltf.h#L2436-L2441Referencevia CVE List
- github.com/jkuhlmann/cgltfReferencevia CVE List