Vulnerability · Published Apr 13, 2026 · Assigned by mitre
CVE-2026-29628
Medium 6.2
In plain English
A medium-severity stack buffer overflow in the tinyobjloader package (Ubuntu). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS 3.1)6.2Medium
Exploit odds (30 days)0.2%top 93.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack tooling1Public PoC
Official description
A stack overflow in the experimental/tinyobj_loader_opt.h file of tinyobjloader commit d56555b allows attackers to cause a Denial of Service (DoS) via supplying a crafted .mtl file.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | tinyobjloader | no fix listed | UBUNTU-CVE-2026-29628 |
| Ubuntu:24.04:LTS | tinyobjloader | no fix listed | UBUNTU-CVE-2026-29628 |
| Ubuntu:25.10 | tinyobjloader | no fix listed | UBUNTU-CVE-2026-29628 |
| Ubuntu:26.04:LTS | tinyobjloader | no fix listed | UBUNTU-CVE-2026-29628 |
| Ubuntu:26.10 | tinyobjloader | no fix listed | UBUNTU-CVE-2026-29628 |
Affected products (as reported)
Weakness: CWE-121 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H