CVE-2026-71266

HIGH

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

Title source: cna
STIX 2.1

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 via memcpy(linebuf, p, p_len), guarded only by . The identical vulnerable pattern is duplicated in a second function in the same file.

References (2)

Core 2

Scores

CVSS v3 7.8
EPSS 0.0013
EPSS Percentile 2.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-121
Status published
Products (1)
syoyo/tinyobjloader-c
Published Aug 05, 2026
Tracked Since Aug 05, 2026