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Medium, CVSS 6.5amended

Open WebUI: Admin demoted through SSO role sync keeps read and write access to all users' notes

CVE-2026-87014GHSA-wjwr-xfp9-r66p

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (open-webui 0.11.1), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • PyPI open-webui

    Affected
    >= 0.9.0, < 0.11.1
    Fixed in
    0.11.1

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
6.5 · CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
EPSS
  • CVE-2026-87014: 0.51% estimated exploitation activity in the next 30 days; percentile 43.79 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Summary A user who is demoted from admin by an identity provider keeps admin-level read and write access to every user's notes, over any Socket.IO connection that was already open when the demotion happened. Open WebUI caches the user's role on the socket at connection time, and the two SSO role-sync paths, the reverse-proxy trusted role header and OAuth role mapping, changed the role in the database without tearing that cached session down. Only the admin user-management endpoints invalidated sessions, so a demotion driven by the identity provider left the old privileges live on the socket. Preconditions A role-sync SSO mode has to be enabled. Either trusted-header authentication with WEBUIAUTHTRUSTEDROLEHEADER set, which is unset by default, or OAuth with role mapping enabled, which is off by default. Deployments that change roles only through the admin panel are not affected, because that path already invalidated the user's sockets. The account has to be an admin at the moment it…

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 3 · amended ·

    Amended from ghsa record GHSA-wjwr-xfp9-r66p

  2. Revision 2 · amended ·

    Amended from osv record GHSA-wjwr-xfp9-r66p

  3. Revision 1 · created ·

    Published from ghsa record GHSA-wjwr-xfp9-r66p

Agent brief

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# Patch Next advisory brief: CVE-2026-87014

Advisory: Open WebUI: Admin demoted through SSO role sync keeps read and write access to all users' notes
IDs: CVE-2026-87014, GHSA-wjwr-xfp9-r66p
Record: https://patchnext.com/advisories/cve-2026-87014 (revision 3, source checked 26 Oct 2026, 13:51 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: open-webui 0.11.1. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI open-webui: affected >= 0.9.0, < 0.11.1; fixed in 0.11.1

## Suggested inspection (read-only)
- `python -m pip show open-webui`: prints the installed version. Run with the environment that serves production active.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on open-webui.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-wjwr-xfp9-r66p (GitHub-reviewed advisory GHSA-wjwr-xfp9-r66p lists affected ranges: PyPI open-webui >=0.9.0 <0.11.1)
- Verified: https://osv.dev/vulnerability/GHSA-wjwr-xfp9-r66p (OSV record GHSA-wjwr-xfp9-r66p lists affected ranges: PyPI open-webui >=0.9.0 <0.11.1 (fixed))

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