CVE-2026-71266 tinyobjloader-c Stack Buffer Overflow in MTL Material File Line Parsing

tinyobjloader-c's tinyobjparseandindexmtlfile tinyobjloaderc.h reads each line of a .mtl material file into a fixed 4096-byte stack buffer via memcpylinebuf, p, plen, guarded only by . The identical vulnerable pattern is duplicated in a second function in the same file...

CVE-2026-71266

The CVE-2026-71266 entry concerns tinyobjloader-c. In tinyobj_parse_and_index_mtl_file() (tinyobj_loader_c.h), a line from a .mtl file is copied into a fixed 4096-byte stack buffer linebuf using memcpy(linebuf, p, p_len) with only an assert(p_len