CVE-2026-87994
CVE-2026-87994 · Open WebUI: Channel members can overwrite another member's message via the chat completions endpoint
Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.5 until 0.11.1, the channel branch of chat_completion in backend/open_webui/main.py checked channel write access and channel membership for a supplied message_id but did not verify that the calling user authored the targeted message. A channel member could use the chat completions endpoint to replace another member's message while preserving the victim as the stored author, altering the conversation record without gaining access to other channels. This issue is fixed in version 0.11.1.
CVSS 4.3 · Moyenne · EPSS 0,4% · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: python
Produits et versions concernés
open-webui
- Versions du logiciel
- >= 0.9.5, < 0.11.1: Concernée
Aucun correctif publié
open-webui PyPI
- Versions du logiciel
- 0.10.0
- 0.10.1
- 0.10.2
- 0.11.0
- 0.9.5
- 0.9.6
- Plages de versions concernées
- ECOSYSTEM: ≥ 0.9.5, < 0.11.1
Mettez à jour vers 0.11.1
Sources originales
- https://github.com/open-webui/open-webui/security/advisories/GHSA-fmqh-xp37-5hr8
- https://github.com/open-webui/open-webui/pull/28631
- https://github.com/open-webui/open-webui/commit/7d392bedc9c1aaecc94509a58e59186b614433dc
- https://github.com/open-webui/open-webui/releases/tag/v0.11.1
- https://nvd.nist.gov/vuln/detail/CVE-2026-87994