CVE-2026-44553HIGH 8.1EPSS p20.0%

CVE-2026-44553CVE-2026-44553

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 As a result, a user whose admin role has been revoked retains admin privileges within their existing Socket.IO session for as long as they keep the connection alive (via automatic heartbeats).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.

Scoring

CVSS 3.18.1 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
EPSS0.28% probability of exploitation · percentile 20.0% · 2026-06-19T12:03:05Z
Published2026-05-15
Last modified2026-05-19

Underlying weaknesses· 1

CWE-613

References

  1. https://github.com/open-webui/open-webui/security/advisories/GHSA-45m8-cpm2-3v65

1

TypeTargetConfidenceTier
WeaknessInsufficient Session Expirationcwe-6130%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.