Private RAG data disclosure via Milvus query injection
Published Jun 23, 2026 · Updated Jun 23, 2026
Query injection in Open WebUI before 0.9.6 allows remote authenticated users to read private RAG content through Milvus filters. The collection ACL accepts unknown names, which Milvus multitenancy inserts as unescaped resource_id values into filter expressions. Exploitation requires a low-privilege account and nondefault Milvus multitenancy mode; it exposes other users' knowledge-base chunks without interaction.
Summary
What happened
Query injection in Open WebUI before 0.9.6 allows remote authenticated users to read private RAG content through Milvus filters. The collection ACL accepts unknown names, which Milvus multitenancy inserts as unescaped resource_id values into filter expressions. Exploitation requires a low-privilege account and nondefault Milvus multitenancy mode; it exposes other users' knowledge-base chunks without interaction.
The record
- CVE
- CVE-2026-54019
- Published
- Jun 23, 2026
- Updated
- Jun 23, 2026
- Vendor
- Open WebUI
- Product
- Open WebUI
- Classifications
- CWE-862, CWE-943, T1213
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 23, 2026CVE publishedPublication date reported by the CVE source.
- Jun 23, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 0.9.6
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Vendor advisory Milvus filter-injection proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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