What is CVE-2026-54015?

CVE-2026-54015 is a medium-severity vulnerability in Open-webui, classified under Improper Access Control. CVSS score: 6.4/10. Published 2026-06-23.

How severe is CVE-2026-54015?

Medium severity. CVSS v3 base score is 6.4 out of 10.

Auth bypass in Open-webui

CVE-2026-54015

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, Open WebUI's prompt version-history endpoints authorize the prompt_id in the URL but then act on caller-supplied history IDs…

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L.

Affected products

Open-webui — versions < 0.9.6

Weakness classification (CWE)

CWE-284 — Improper Access Control
CWE-639 — Authorization Bypass Through User-Controlled Key

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-54015?: CVE-2026-54015 is a medium-severity vulnerability in Open-webui, classified under Improper Access Control. CVSS score: 6.4/10. Published 2026-06-23.
How severe is CVE-2026-54015?: Medium severity. CVSS v3 base score is 6.4 out of 10.