CVE-2026-71266tinyobjloader-c Stack Buffer Overflow in MTL Material File Line Parsing
Updated under an hour ago ()
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It affects syoyo tinyobjloader-c. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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 via memcpy(linebuf, p, p_len), guarded only by . The identical vulnerable pattern is duplicated in a second function in the same file.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-121
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- TuranSec
- NVD analysis
- Deferred
- Record last updated
- Aug 10, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
syoyo tinyobjloader-c syoyo:tinyobjloader_c (from the name) | all versions | CNA record |
References
- https://github.com/syoyo/tinyobjloader-cthird-party-advisory
- https://github.com/syoyo/tinyobjloader-c/blob/master/tinyobj_loader_c.hthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.