CVE-2026-75148: Integer Overflow or Wraparound in jkuhlmann cgltf
An integer overflow vulnerability exists in cgltf through version 1.15 in the non-sparse accessor bounds check within the cgltf_validate() function. This flaw allows remote attackers to supply specially crafted .gltf or .glb files with malformed accessor count values that cause an unsigned integer multiplication overflow. The overflow bypasses bounds checking and leads to a heap out-of-bounds read when cgltf_accessor_read_float() is called, potentially resulting in memory disclosure and denial of service.
AI Analysis
Technical Summary
CVE-2026-75148 describes an integer overflow or wraparound vulnerability in the cgltf library (versions up to and including 1.15). The issue arises in the cgltf_validate() function's non-sparse accessor bounds check, where an unsigned integer multiplication of accessor stride and element count can overflow if provided with a crafted accessor count. This overflow causes the bounds check to incorrectly pass, leading to a heap out-of-bounds read during subsequent calls to cgltf_accessor_read_float(). The vulnerability can be triggered remotely by supplying malformed .gltf or .glb files with specially crafted accessor counts.
Potential Impact
Exploitation of this vulnerability can lead to memory disclosure and denial of service conditions. The heap out-of-bounds read may allow attackers to access sensitive memory contents or crash the application using the cgltf library. There is no indication of privilege escalation or code execution from the provided data.
Mitigation Recommendations
No official patch or fix is currently documented for this vulnerability. Users should monitor the vendor's advisory for updates. Until a fix is available, avoid processing untrusted or malformed .gltf or .glb files to mitigate risk.
CVE-2026-75148: Integer Overflow or Wraparound in jkuhlmann cgltf
Description
An integer overflow vulnerability exists in cgltf through version 1.15 in the non-sparse accessor bounds check within the cgltf_validate() function. This flaw allows remote attackers to supply specially crafted .gltf or .glb files with malformed accessor count values that cause an unsigned integer multiplication overflow. The overflow bypasses bounds checking and leads to a heap out-of-bounds read when cgltf_accessor_read_float() is called, potentially resulting in memory disclosure and denial of service.
CVSS v4.0
Score 6.9medium
Affected software
jkuhlmann
cgltf
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-75148 describes an integer overflow or wraparound vulnerability in the cgltf library (versions up to and including 1.15). The issue arises in the cgltf_validate() function's non-sparse accessor bounds check, where an unsigned integer multiplication of accessor stride and element count can overflow if provided with a crafted accessor count. This overflow causes the bounds check to incorrectly pass, leading to a heap out-of-bounds read during subsequent calls to cgltf_accessor_read_float(). The vulnerability can be triggered remotely by supplying malformed .gltf or .glb files with specially crafted accessor counts.
Potential Impact
Exploitation of this vulnerability can lead to memory disclosure and denial of service conditions. The heap out-of-bounds read may allow attackers to access sensitive memory contents or crash the application using the cgltf library. There is no indication of privilege escalation or code execution from the provided data.
Mitigation Recommendations
No official patch or fix is currently documented for this vulnerability. Users should monitor the vendor's advisory for updates. Until a fix is available, avoid processing untrusted or malformed .gltf or .glb files to mitigate risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-17T18:39:57.662Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a85b8bbacd9273b492ae449
Added to database: 08/19/2026, 14:07:55 UTC
Last enriched: 09/11/2026, 09:03:22 UTC
Last updated: 10/03/2026, 02:46:06 UTC
Views: 67
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