HIGH SeverityCVSS 3.18.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVE-2026-44553

Last updated May 15, 2026 · Published May 15, 2026

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, administrative role changes and user deletions do not iterate SESSION_POOL to disconnect affected sessions. As a result, a user whose admin role has been revoked retains admin privileges within their existing Socket.IO session for as long as they keep the connection alive (via automatic heartbeats). The gap is exclusive to the Socket.IO session cache. This vulnerability is fixed in 0.9.0.

Affected products

1 listed

open-webui:open-webui

Mappings

CWE

CWE-613

CAPEC

None listed.

Research

Session management: secure cookies, rotation, and lifetimeSession management is the spine of authenticated web apps. Use HttpOnly, Secure, SameSite cookies, rotate on…

Guides

Secure session management: cookies, tokens, rotation, and logoutSecure session management means HttpOnly Secure cookies, rotation on privilege change, idle and absolute…

Training

Session ManagementTokens, cookies, and state - keeping sessions secure in stateless architectures.

CVE-2026-44553

Description

Affected products

Mappings

Related