CVE-2026-87017

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    CVE-2026-87017

    Published: 9 Sept 2026Last Modified: 12 Sept 2026

    Summary: Open WebUI: Inaccessible knowledge bases are exposed through the built-in knowledge tool on most vector backends

    Details: Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.7.0 until 0.11.1, the built-in knowledge search tool passed the caller's readable knowledge identifiers through a metadata filter, but the search methods in eleven shipped vector backends ignored that filter. An authenticated user on an affected backend could enumerate the identifiers, names, and descriptions of inaccessible knowledge bases from the shared collection, although the associated document text remained in separate collections. This issue is fixed in version 0.11.1.

    References: https://github.com/open-webui/open-webui/releases/tag/v0.11.1, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/87xxx/CVE-2026-87017.json, https://github.com/open-webui/open-webui/security/advisories/GHSA-pcvc-8vrv-8q6w, https://nvd.nist.gov/vuln/detail/CVE-2026-87017, https://github.com/open-webui/open-webui/commit/1d6d4e6e6647e1d403438ede7bd9ba20bc4cc8f6

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 6adde203cd292a9e3af9c64a2ae36b603fed096a
    Fixed -1d6d4e6e6647e1d403438ede7bd9ba20bc4cc8f6

    Affected versions

    v0.11.0

    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
    CVE-2026-87017 | CVE-DB