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    CVE-2026-3446

    When calling base64.b64decode() or related functions the decoding process would stop after encountering the first padded quad regardless of whether there was more information to be processed. This can lead to data being accepted which may be processed differently by other implementations. Use "validate=True" to enable stricter processing of base64 data.

    Published:Apr 10, 2026
    Last Modified:Apr 15, 2026
    EPS:Apr 10, 2026
    EPSS Score:0.00023
    CVSS Score:5.3

    Affected Products

    Vendor
    Python
    Product
    Cpython

    Exploits

    No exploit reference

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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