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8 vulnerabilities by jkuhlmann
CVE-2026-112019 (GCVE-0-2026-112019)
Vulnerability from nvd – Published: 2026-10-18 11:38 – Updated: 2026-10-20 17:42
VLAI
EPSS
VEX
Title
cgltf through 1.15 Heap Out-of-Bounds Read via cgltf_accessor_unpack_floats()
Summary
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.
Severity
6.1 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-20 17:42 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://hackmd.io/@haindpwn/cgltf-accessor-unpack… | technical-description |
| https://github.com/jkuhlmann/cgltf/blob/360db1a95… | technical-description |
| https://github.com/jkuhlmann/cgltf/blob/360db1a95… | technical-description |
| https://github.com/jkuhlmann/cgltf | product |
| https://www.vulncheck.com/advisories/cgltf-throug… | third-party-advisory |
Date Public
2026-10-16 00:00
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CVE-2026-112018 (GCVE-0-2026-112018)
Vulnerability from nvd – Published: 2026-10-18 11:38 – Updated: 2026-10-19 18:36
VLAI
EPSS
VEX
Title
cgltf through 1.15 Heap Out-of-Bounds Write via cgltf_accessor_unpack_floats()
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-19 18:36 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://hackmd.io/@haindpwn/cgltf-accessor-unpack… | technical-description |
| https://github.com/jkuhlmann/cgltf/blob/360db1a95… | technical-description |
| https://github.com/jkuhlmann/cgltf | product |
| https://www.vulncheck.com/advisories/cgltf-throug… | third-party-advisory |
| https://hackmd.io/@haindpwn/cve-2026-112018-11201… | exploit |
Date Public
2026-10-16 00:00
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CVE-2026-75148 (GCVE-0-2026-75148)
Vulnerability from nvd – Published: 2026-08-19 13:37 – Updated: 2026-08-21 11:21 X_Open Source
VLAI
EPSS
VEX
Title
cgltf 1.15 Integer Overflow via cgltf_validate() Accessor Bounds Check
Summary
cgltf through 1.15 contains an integer overflow vulnerability in the non-sparse accessor bounds check within cgltf_validate() that allows remote attackers to cause memory disclosure and denial of service by supplying crafted accessor count values. Attackers can provide malformed .gltf or .glb input with a specially crafted accessor count to overflow the unsigned integer multiplication of accessor stride and element count, causing the bounds check to pass and triggering a heap out-of-bounds read when cgltf_accessor_read_float() is subsequently called on the validated malformed accessor.
Severity
6.1 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 17:21 UTC
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/jkuhlmann/cgltf/issues/301 | issue-tracking |
| https://www.vulncheck.com/advisories/cgltf-intege… | third-party-advisory |
Date Public
2026-08-17 00:00
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CVE-2026-32845 (GCVE-0-2026-32845)
Vulnerability from nvd – Published: 2026-03-23 15:50 – Updated: 2026-07-14 18:39
VLAI
EPSS
VEX
Title
jkuhlmann / cgltf <= 1.15 Sparse Accessor Validation Integer Overflow
Summary
cgltf version 1.15 and prior contain an integer overflow vulnerability in the cgltf_validate() function when validating sparse accessors that allows attackers to trigger out-of-bounds reads by supplying crafted glTF/GLB input files with attacker-controlled size values. Attackers can exploit unchecked arithmetic operations in sparse accessor validation to cause heap buffer over-reads in cgltf_calc_index_bound(), resulting in denial of service crashes and potential memory disclosure.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-31 15:12 UTC
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/jkuhlmann/cgltf/issues/287 | technical-descriptionexploit |
| https://github.com/jkuhlmann/cgltf/pull/293 | issue-tracking |
| https://www.vulncheck.com/advisories/jkuhlmann-cg… | third-party-advisory |
Date Public
2026-03-17 00:00
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CVE-2026-112019 (GCVE-0-2026-112019)
Vulnerability from cvelistv5 – Published: 2026-10-18 11:38 – Updated: 2026-10-20 17:42
VLAI
EPSS
VEX
Title
cgltf through 1.15 Heap Out-of-Bounds Read via cgltf_accessor_unpack_floats()
Summary
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Severity
6.1 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-20 17:42 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://hackmd.io/@haindpwn/cgltf-accessor-unpack… | technical-description |
| https://github.com/jkuhlmann/cgltf/blob/360db1a95… | technical-description |
| https://github.com/jkuhlmann/cgltf/blob/360db1a95… | technical-description |
| https://github.com/jkuhlmann/cgltf | product |
| https://www.vulncheck.com/advisories/cgltf-throug… | third-party-advisory |
Date Public
2026-10-16 00:00
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CVE-2026-112018 (GCVE-0-2026-112018)
Vulnerability from cvelistv5 – Published: 2026-10-18 11:38 – Updated: 2026-10-19 18:36
VLAI
EPSS
VEX
Title
cgltf through 1.15 Heap Out-of-Bounds Write via cgltf_accessor_unpack_floats()
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-19 18:36 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://hackmd.io/@haindpwn/cgltf-accessor-unpack… | technical-description |
| https://github.com/jkuhlmann/cgltf/blob/360db1a95… | technical-description |
| https://github.com/jkuhlmann/cgltf | product |
| https://www.vulncheck.com/advisories/cgltf-throug… | third-party-advisory |
| https://hackmd.io/@haindpwn/cve-2026-112018-11201… | exploit |
Date Public
2026-10-16 00:00
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CVE-2026-75148 (GCVE-0-2026-75148)
Vulnerability from cvelistv5 – Published: 2026-08-19 13:37 – Updated: 2026-08-21 11:21 X_Open Source
VLAI
EPSS
VEX
Title
cgltf 1.15 Integer Overflow via cgltf_validate() Accessor Bounds Check
Summary
cgltf through 1.15 contains an integer overflow vulnerability in the non-sparse accessor bounds check within cgltf_validate() that allows remote attackers to cause memory disclosure and denial of service by supplying crafted accessor count values. Attackers can provide malformed .gltf or .glb input with a specially crafted accessor count to overflow the unsigned integer multiplication of accessor stride and element count, causing the bounds check to pass and triggering a heap out-of-bounds read when cgltf_accessor_read_float() is subsequently called on the validated malformed accessor.
Severity
6.1 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 17:21 UTC
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/jkuhlmann/cgltf/issues/301 | issue-tracking |
| https://www.vulncheck.com/advisories/cgltf-intege… | third-party-advisory |
Date Public
2026-08-17 00:00
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CVE-2026-32845 (GCVE-0-2026-32845)
Vulnerability from cvelistv5 – Published: 2026-03-23 15:50 – Updated: 2026-07-14 18:39
VLAI
EPSS
VEX
Title
jkuhlmann / cgltf <= 1.15 Sparse Accessor Validation Integer Overflow
Summary
cgltf version 1.15 and prior contain an integer overflow vulnerability in the cgltf_validate() function when validating sparse accessors that allows attackers to trigger out-of-bounds reads by supplying crafted glTF/GLB input files with attacker-controlled size values. Attackers can exploit unchecked arithmetic operations in sparse accessor validation to cause heap buffer over-reads in cgltf_calc_index_bound(), resulting in denial of service crashes and potential memory disclosure.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-31 15:12 UTC
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/jkuhlmann/cgltf/issues/287 | technical-descriptionexploit |
| https://github.com/jkuhlmann/cgltf/pull/293 | issue-tracking |
| https://www.vulncheck.com/advisories/jkuhlmann-cg… | third-party-advisory |
Date Public
2026-03-17 00:00
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