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    CVE-2026-45316

    Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.3, the POST /api/v1/notes/{id}/pin endpoint performs a write operation (toggling the is_pinned field) but only checks for read permission. Users with read-only access to a shared note can pin/unpin it, which is a state-modifying action that should require write permission. This vulnerability is fixed in 0.9.3.

    Published:May 15, 2026
    Last Modified:May 18, 2026
    EPS:May 15, 2026
    EPSS Score:0.00026
    CVSS Score:3.5

    Affected Products

    Vendor
    Open-webui
    Product
    Open-webui
    Vendor
    Openwebui
    Product
    Open Webui

    Exploits

    https://github.com/open-webui/open-webui/security/advisories/GHSA-jx2x-j75f-xq3jhttps://github.com/open-webui/open-webui/security/advisories/GHSA-jx2x-j75f-xq3jhttps://github.com/arian-gogani/enforcement-coverage

    Common Weakness Enumeration

    CWE-863 Incorrect Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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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