Integer overflow in Jkuhlmann Cgltf
CVE-2026-75148
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.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H.
EPSS exploit prediction
EPSS: 0.002 (9.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 9.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.001
Affected products
Weakness classification (CWE)
References
- github.com/jkuhlmann/cgltf/issues/301 (issue-tracking, technical-description, exploit)
- www.vulncheck.com/advisories/cgltf-integer-overflow-via-cgltf-validate-accessor… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-75148?
- CVE-2026-75148 is a medium-severity vulnerability in Jkuhlmann Cgltf, classified under Integer Overflow or Wraparound. CVSS score: 6.1/10. Published 2026-08-19.
- How severe is CVE-2026-75148?
- Medium severity. CVSS v3 base score is 6.1 out of 10.