CVE-2026-88001

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    CVE-2026-88001

    Published: 9 Sept 2026Last Modified: 12 Sept 2026

    Summary: Open WebUI: Server-side fetches reach blocked and internal hosts via unvalidated HTTP redirect targets

    Details: Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.5 until 0.11.1, server-side web fetches did not reapply WEB_FETCH_FILTER_LIST or private-address controls to HTTP redirect destinations when AIOHTTP_CLIENT_ALLOW_REDIRECTS was enabled. An authenticated user could redirect the aiohttp and requests fetch paths to excluded hosts, loopback, private networks, or cloud metadata services and route resulting content into web search, URL ingestion, page-fetch tools, or chat image processing. 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/2026/88xxx/CVE-2026-88001.json, https://github.com/open-webui/open-webui/security/advisories/GHSA-5x7x-4c3c-qf5w, https://nvd.nist.gov/vuln/detail/CVE-2026-88001, https://github.com/open-webui/open-webui/commit/e3e4bd87df6fc629e7e22081d980d55a7632b8b7, https://github.com/open-webui/open-webui/pull/27823

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 3660bc00fd807deced3400a63bfa6db47811a3bb
    Fixed -e3e4bd87df6fc629e7e22081d980d55a7632b8b7

    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-2026-88001 | CVE-DB