CVE-2026-54019

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, Open WebUI added collection-level ACL checks, but the patch can still be bypassed when Milvus multitenancy mode is enabled. The ACL allows unknown non-KB collection names as legacy/ephemeral collections. In Milvus multitenancy mode, that user-controlled collection name becomes a resource_id and is interpolated into a Milvus expression without escaping. This is caused by an incomplete fix for CVE-2026-44560 This vulnerability is fixed in 0.9.6.

CVSS v3.1

6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1

6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS

0.39% chance of exploitation in the next 30 days, 32th percentile

Published

2026-06-23

Proof-of-concept exploits (1)

• advisories/GHSA-p5cp-r7rg-qpxc

References

• CVE Record
• NVD entry

Related

• CVE-2026-54018
• CVE-2026-54022
• CVE-2026-54016
• CVE-2026-54051
• CVE-2026-54015
• CVE-2026-54059