---
cve: "CVE-2026-32845"
severity: "MEDIUM"
cvss: 6.9
epss: "0.1%"
vendor: "jkuhlmann"
kev: false
exploited: false
published: "2026-03-23 16:16:48"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-25T01:12:30+02:00"
---

# CVE-2026-32845

> 6.9 MEDIUM · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Referenzen

- <https://github.com/jkuhlmann/cgltf/issues/287>
- <https://github.com/jkuhlmann/cgltf/pull/293>
- <https://www.vulncheck.com/advisories/jkuhlmann-cgltf-sparse-accessor-validation-integer-overflow>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-32845) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_