CVE-2026-112018

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.

CVSS v3 7.0 HIGH

7.0^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.0 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/jkuhlmann/cgltf
https://github.com/jkuhlmann/cgltf/blob/360db1a95480fe102ae9c69b27c5d101167ff5ba/cgltf.h#L2436-L2441
https://hackmd.io/@haindpwn/cgltf-accessor-unpack-floats-sparse-oob
https://www.vulncheck.com/advisories/cgltf-through-1.15-heap-out-of-bounds-write-via-cgltf-accessor-unpack-floats
https://hackmd.io/@haindpwn/cve-2026-112018-112019-cgltf-accessor-unpack-floats-sparse-oob

Configurations

No configuration.

History

19 Oct 2026, 19:17

Type	Values Removed	Values Added
References		() https://hackmd.io/@haindpwn/cve-2026-112018-112019-cgltf-accessor-unpack-floats-sparse-oob -

18 Oct 2026, 12:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-18 12:17

Updated : 2026-10-19 19:17

NVD link : CVE-2026-112018

Mitre link : CVE-2026-112018

CVE.ORG link : CVE-2026-112018

JSON object : View

Products Affected

No product.

CWE

CWE-787

Out-of-bounds Write

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