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    CVE-2026-89266

    stb_vorbis through 1.22 contains a heap buffer overflow in start_decoder() where the codebook multiplicands allocation size is truncated from size_t to int. Attackers can craft a malicious Ogg Vorbis file with large entries and dimensions values to trigger out-of-bounds writes, causing process crashes or heap corruption.

    Published:Sep 11, 2026
    Last Modified:Sep 11, 2026
    EPS:Sep 11, 2026
    EPSS Score:
    CVSS Score:8.2

    Affected Products

    Vendor
    Stb Vorbis Project
    Product
    Stb Vorbis

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2023-47212 (CVSS 9.8) — A heap-based buffer overflow vulnerability exists in the comment functionality of stb _vorbis.c v1.22. A speci…
    CVE-2019-13217 (CVSS 7.8) — A heap buffer overflow in the start_decoder function in stb_vorbis through 2019-03-04 allows an attacker to ca…
    CVE-2019-13218 (CVSS 5.5) — Division by zero in the predict_point function in stb_vorbis through 2019-03-04 allows an attacker to cause a …
    CVE-2019-13219 (CVSS 5.5) — A NULL pointer dereference in the get_window function in stb_vorbis through 2019-03-04 allows an attacker to c…
    CVE-2019-13222 (CVSS 7.1) — An out-of-bounds read of a global buffer in the draw_line function in stb_vorbis through 2019-03-04 allows an …
    CVE-2019-13223 (CVSS 5.5) — A reachable assertion in the lookup1_values function in stb_vorbis through 2019-03-04 allows an attacker to ca…
    CVE-2019-13220 (CVSS 7.1) — Use of uninitialized stack variables in the start_decoder function in stb_vorbis through 2019-03-04 allows an …
    CVE-2019-13221 (CVSS 7.8) — A stack buffer overflow in the compute_codewords function in stb_vorbis through 2019-03-04 allows an attacker …
    CVE-2018-1000050 (CVSS 8.8) — Sean Barrett stb_vorbis version 1.12 and earlier contains a Buffer Overflow vulnerability in All vorbis decodi…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High