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Public proof of concept

CVE-2026-29628

A public proof of concept exists; no exploitation attested.

  • Published2026-04-13
  • WeaknessCWE-121

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-04-1315:17CVE publishedNVD

Versions per branch

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • tinyobjloaderUbuntu:26.10all versions · no fixed version listed
  • tinyobjloaderUbuntu:26.04:LTSall versions · no fixed version listed
  • tinyobjloaderUbuntu:25.10all versions · no fixed version listed
  • tinyobjloaderUbuntu:24.04:LTSall versions · no fixed version listed
  • tinyobjloaderUbuntu:22.04:LTSall versions · no fixed version listed

Vendor advisories

  • CVE-2026-29628 Red Hat Product Security

    tinyobjloader: tinyobjloader: Denial of Service via crafted .mtl file

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

read 2026-11-01 01:02 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2026-04-13
Last Modified
2026-06-17
NVD status
Deferred

Frequently asked questions

What is CVE-2026-29628?

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.

Is CVE-2026-29628 actively exploited?

A proof-of-concept exploit exists for CVE-2026-29628, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-29628?

CVE-2026-29628 has a CVSS v3 base score of 6.2 (MEDIUM severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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Sources for this record