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...