CVE-2026-44553: Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline

Q: How do I fix CVE-2026-44553?

open webui: upgrade to 0.9.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-44553 being exploited?

CVE-2026-44553 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-44553 affect?

CVE-2026-44553 affects open webui. Severity is high (CVSS 8.1). 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 us

Q: How urgent is CVE-2026-44553?

Priority 38/100. High severity; Public exploit reference

Routine

HIGH 8.1UPGRADE

CVE-2026-44553 is a high-severity flaw (CVSS 8.1) affecting open webui. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 As a result, a user whose admin role has been revoked retains admin privileges within their existing Socket.IO session for as long as they keep the connection alive (via automatic heartbeats).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

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 80%)
CISA exploited list	No
Weakness	CWE-613
Published	2026-05-15
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: openwebui

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-15 20:16 UTCPublished CVE record published
2026-06-17 10:50 UTCUpdated Record last modified

openwebui open webui UPGRADE

Affected: < 0.9.0

Fixed in: 0.9.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy open-webui || rpm -q open-webui || open-webui --version

2. UPGRADE to 0.9.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade open-webui

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade open-webui

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-44553?

open webui: upgrade to 0.9.0. Exact commands for each OS are on this page.

Is CVE-2026-44553 being exploited?

CVE-2026-44553 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-44553 affect?

CVE-2026-44553 affects open webui. Severity is high (CVSS 8.1). 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 us

How urgent is CVE-2026-44553?

Priority 38/100. High severity; Public exploit reference

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References

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