Vulnerability · Published Oct 18, 2026 · Assigned by VulnCheck
CVE-2026-112019cgltf through 1.15 Heap Out-of-Bounds Read via cgltf_accessor_unpack_floats()
Medium 6.1
In plain English
A medium-severity out-of-bounds read in cgltf from jkuhlmann. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).
Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.2%top 91.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
References
- https://hackmd.io/@haindpwn/cgltf-accessor-unpack-floats-sparse-oob technical-description
- https://github.com/jkuhlmann/cgltf/blob/360db1a95480fe102ae9c69b27c5d101167ff5ba/cgltf.h#L2436-L2441 technical-description
- https://github.com/jkuhlmann/cgltf/blob/360db1a95480fe102ae9c69b27c5d101167ff5ba/cgltf.h#L1612-L1619 technical-description
- https://github.com/jkuhlmann/cgltf product
- VulnCheck Advisory: cgltf through 1.15 Heap Out-of-Bounds Read via cgltf_accessor_unpack_floats() third-party-advisory