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TinyOBJ loader crashes with bad 3D file
OSV-2026-371
Summary
The TinyOBJ library, used to load 3D models, can crash when given a specially crafted file. This could potentially be used to disrupt applications that rely on TinyOBJ. To stay safe, ensure you're using the latest version of the library and be cautious when loading 3D models from untrusted sources.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| – | tinyobjloader | All versions | – |
Original title
Heap-buffer-overflow in tinyobj::tryParseDouble
Original description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=490598877
```
Crash type: Heap-buffer-overflow READ 1
Crash state:
tinyobj::tryParseDouble
tinyobj::LoadObjInternal
tinyobj::LoadObj
```
```
Crash type: Heap-buffer-overflow READ 1
Crash state:
tinyobj::tryParseDouble
tinyobj::LoadObjInternal
tinyobj::LoadObj
```
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=490598877 Third Party Advisory
Published: 9 Mar 2026 · Updated: 13 Mar 2026 · First seen: 13 Mar 2026