CVE-2026-87014 - Open WebUI: Admin demoted through SSO role sync keeps read and write access to all users' notes

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MEDIUM

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

Published Sep 9, 2026

6.5

MEDIUM

CVSS 3.1

EPSS 0.51%

Description

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.1, role synchronization in backend/open_webui/routers/auths.py and backend/open_webui/utils/oauth.py updated an administrator's database role without invalidating the user record cached by backend/open_webui/socket/main.py. An administrator demoted through a trusted role header or OAuth role mapping could keep an already-open Socket.IO connection and continue reading or editing every user's collaborative notes until that connection closed. This issue is fixed in version 0.11.1.

Affected products

Vendor Open-Webui Product Open-Webui Default
n/a
- Version
  >= 0.9.0, < 0.11.1
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Open-Webui

n/a

Version	Status	Constraints
>= 0.9.0, < 0.11.1	affected	-

Remediation

No remediation recorded yet.

Weaknesses (2)

CWE-613

CWE-863

Incorrect Authorization

References (5)

https://github.com/advisories/GHSA-wjwr-xfp9-r66p
Advisory
https://github.com/open-webui/open-webui/commit/ce3c175e260709f359d7e6cbb3132f0572098b95
x_refsource_MISCPatch
https://github.com/open-webui/open-webui/releases/tag/v0.11.1
x_refsource_MISCRelease Notes
https://github.com/open-webui/open-webui/security/advisories/GHSA-wjwr-xfp9-r66p
exploitx_refsource_CONFIRMVendor Advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-87014

Link	Providers	Tags
https://github.com/advisories/GHSA-wjwr-xfp9-r66p		Advisory
https://github.com/open-webui/open-webui/commit/ce3c175e260709f359d7e6cbb3132f0572098b95		x_refsource_MISCPatch
https://github.com/open-webui/open-webui/releases/tag/v0.11.1		x_refsource_MISCRelease Notes
https://github.com/open-webui/open-webui/security/advisories/GHSA-wjwr-xfp9-r66p		exploitx_refsource_CONFIRMVendor Advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-87014