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    2 vulnerabilities by Sean Barrett (nothings)

    CVE-2026-18497 (GCVE-0-2026-18497)

    Vulnerability from nvd – Published: 2026-08-07 14:19 – Updated: 2026-08-12 13:51
    VLAI
    Title
    The nothings stb TrueType library contains a heap buffer overflow vulnerability
    Summary
    A heap-buffer-overflow vulnerability exists in the nothings stb TrueType library, up to version 1.26, that is used for parsing TrueType font files. The vulnerability exists in the stbtt__GetGlyphShapeTT() function within the nothings stb_truetype.h library when parsing malformed TTF (TrueType Font) files. The vulnerability resides in the glyph data parsing path. An attacker can craft a malformed TTF file with an inflated endPtsOfContours value and truncate the remaining glyph data. When an application utilizing stb_truetype.h (such as various game engines or graphics software) attempts to load, bake, or render this malformed font via stbtt_GetGlyphShape(), the parser will attempt to read past the end of the glyph data buffer, triggering the out-of-bounds read.
    Severity
    7.1 (High)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-07 17:58 UTC
    CWE
    • CWE-122 - Heap-based Buffer Overflow
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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    CVE-2026-18497 (GCVE-0-2026-18497)

    Vulnerability from cvelistv5 – Published: 2026-08-07 14:19 – Updated: 2026-08-12 13:51
    VLAI
    Title
    The nothings stb TrueType library contains a heap buffer overflow vulnerability
    Summary
    A heap-buffer-overflow vulnerability exists in the nothings stb TrueType library, up to version 1.26, that is used for parsing TrueType font files. The vulnerability exists in the stbtt__GetGlyphShapeTT() function within the nothings stb_truetype.h library when parsing malformed TTF (TrueType Font) files. The vulnerability resides in the glyph data parsing path. An attacker can craft a malformed TTF file with an inflated endPtsOfContours value and truncate the remaining glyph data. When an application utilizing stb_truetype.h (such as various game engines or graphics software) attempts to load, bake, or render this malformed font via stbtt_GetGlyphShape(), the parser will attempt to read past the end of the glyph data buffer, triggering the out-of-bounds read.
    Severity
    7.1 (High)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-08-07 17:58 UTC
    CWE
    • CWE-122 - Heap-based Buffer Overflow
    Assigner
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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