CVE-2026-71266: Syoyo Tinyobjloader-C

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Syoyo Tinyobjloader-C: any version

Published 2026-08-05. Last modified 2026-08-26.