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    CVE-2026-44512

    Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. From 1.9.0 before 1.22.0, onnx.version_converter.convert_version() can dereference a null pointer in Upsample_6_7::adapt_upsample_6_7() in onnx/version_converter/adapters/upsample_6_7.h when processing an untrusted model with an Upsample node that has zero inputs, causing an unrecoverable denial of service. This issue is fixed in version 1.22.0.

    Published:Jul 8, 2026
    Last Modified:Jul 10, 2026
    EPS:Jul 8, 2026
    EPSS Score:0.0017
    CVSS Score:5.5

    Affected Products

    Vendor
    Onnx
    Product
    Onnx

    Exploits

    https://github.com/onnx/onnx/security/advisories/GHSA-hwpq-hmq9-wj77https://github.com/onnx/onnx/security/advisories/GHSA-hwpq-hmq9-wj77

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-34447 (CVSS 5.5) — Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to versio…
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    CVE-2025-51480 (CVSS 8.8) — Path Traversal vulnerability in onnx.external_data_helper.save_external_data in ONNX 1.17.0 allows attackers t…
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    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