Analysis and contextual insights are available on OpenCVE Cloud.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
Sign in to view the affected projects.
No advisories yet.
Fri, 07 Aug 2026 10:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Syoyo
Syoyo tinyobjloader-c |
|
| Vendors & Products |
Syoyo
Syoyo tinyobjloader-c |
Wed, 05 Aug 2026 17:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Wed, 05 Aug 2026 13:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | tinyobjloader-c's tinyobj_parse_and_index_mtl_file() (tinyobj_loader_c.h) reads each line of a .mtl material file into a fixed 4096-byte stack buffer `linebuf` via memcpy(linebuf, p, p_len), guarded only by `assert(p_len < 4095)`. Because assert() compiles to a no-op under -DNDEBUG (standard for release builds), a crafted .mtl file containing a line (e.g. a "newmtl" material name) longer than 4096 bytes overflows linebuf into the adjacent stack variable namebuf and beyond, corrupting the stack of any application that loads attacker-supplied 3D model/material files. The identical vulnerable pattern is duplicated in a second function in the same file. | |
| Title | tinyobjloader-c Stack Buffer Overflow in MTL Material File Line Parsing | |
| Weaknesses | CWE-121 | |
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: TuranSec
Published:
Updated: 2026-08-05T15:40:58.880Z
Reserved: 2026-08-05T12:23:34.967Z
Link: CVE-2026-71266
Updated: 2026-08-05T15:40:54.703Z
No data.
No data.
OpenCVE Enrichment
Updated: 2026-08-07T10:06:59Z