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    2 vulnerabilities found for tinyobjloader-c by syoyo

    CVE-2026-71266 (GCVE-0-2026-71266)

    Vulnerability from nvd – Published: 2026-08-05 12:26 – Updated: 2026-08-05 15:40
    VLAI
    Title
    tinyobjloader-c Stack Buffer Overflow in MTL Material File Line Parsing
    Summary
    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 `linebuf` via memcpy(linebuf, p, p_len), guarded only by `assert(p_len < 4095)`. Because assert() compiles to a no-op under -DNDEBUG (standard for release builds), a crafted .mtl file containing a line (e.g. a "newmtl" material name) longer than 4096 bytes overflows linebuf into the adjacent stack variable namebuf and beyond, corrupting the stack of any application that loads attacker-supplied 3D model/material files. The identical vulnerable pattern is duplicated in a second function in the same file.
    Severity
    7.8 (High)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    syoyo tinyobjloader-c Affected: 0 , ≤ * (custom)
    		Create a notification for this product.
    Credits
    Alibek Baxtiyorov
    Show details on NVD website
    To clipboard 

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                "id": "CVE-2026-71266",
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        "title": "CISA ADP Vulnrichment"
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      ],
      "title": "tinyobjloader-c Stack Buffer Overflow in MTL Material File Line Parsing"
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    CVE-2026-71266 (GCVE-0-2026-71266)

    Vulnerability from cvelistv5 – Published: 2026-08-05 12:26 – Updated: 2026-08-05 15:40
    VLAI
    Title
    tinyobjloader-c Stack Buffer Overflow in MTL Material File Line Parsing
    Summary
    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 `linebuf` via memcpy(linebuf, p, p_len), guarded only by `assert(p_len < 4095)`. Because assert() compiles to a no-op under -DNDEBUG (standard for release builds), a crafted .mtl file containing a line (e.g. a "newmtl" material name) longer than 4096 bytes overflows linebuf into the adjacent stack variable namebuf and beyond, corrupting the stack of any application that loads attacker-supplied 3D model/material files. The identical vulnerable pattern is duplicated in a second function in the same file.
    Severity
    7.8 (High)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    syoyo tinyobjloader-c Affected: 0 , ≤ * (custom)
    		Create a notification for this product.
    Credits
    Alibek Baxtiyorov
    Show details on NVD website
    To clipboard 

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