CVE-2026-45397

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.5, GET /api/v1/retrieval/ returns live RAG pipeline configuration to any unauthenticated HTTP client. No Authorization header, cookie, or API key is required. Every adjacent endpoint on the same router (/embedding, /config) is correctly guarded by get_admin_user making this a targeted omission. This vulnerability is fixed in 0.9.5.

CVSS v3.1

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

CVSS v3.1

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

EPSS

0.75% chance of exploitation in the next 30 days, 52th percentile

Nuclei

medium · CWE-862

Published

2026-05-15

Updated

2026-05-18

Proof-of-concept exploits (1)

• advisories/GHSA-65pg-qhhw-mxwg

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-45397.yaml

References

• CVE Record
• NVD entry

Related

• CVE-2026-45395
• CVE-2026-45398
• CVE-2026-4539
• CVE-2026-4540
• CVE-2026-45386
• CVE-2026-45401