CVE-2026-45397 json
Open WebUI: Unauthenticated RAG Configuration Disclosure
published 2026-05-14 5 mo ago modified 2026-07-13 3 mo ago also GHSA-65pg-qhhw-mxwg , PYSEC-2026-2706 , EUVD-2026-30629
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 55%
- public exploits
- 0
- none known, plus a Nuclei check
Summary
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.
Patch / fix
- pypi open-webui 0.9.5
- openwebui open_webui 0.9.5
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 5 mo ago
Exploit prediction
0.75% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Nuclei template Open WebUI < 0.9.5 - Information Disclosure nuclei detection template
- github.com https://github.com/open-webui/open-webui/security/advisories/GHSA-65pg-qhhw-mxwg referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| GitHub | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| OSV | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | open-webui | <0.9.5 |
0.9.5 |
Affected products
- open-webui open-webui
Classification
- Weakness
-
- CWE-306 Missing Authentication for Critical Functionality
References
-
github.com
/open-webui/open-webui/security/advisories/GHSA-65pg-qhhw-mxwg
exploit, web, mitigation, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-45397
advisory
-
github.com
/open-webui/open-webui
package
-
github.com
/open-webui/open-webui/releases/tag/v0.9.5
web
-
pypi.org
/project/open-webui
package
-
github.com
/advisories/GHSA-65pg-qhhw-mxwg
advisory
Sources
- CVE List CVE-2026-45397
- GitHub Advisory GHSA-65pg-qhhw-mxwg
- NVD CVE-2026-45397
- OSV PYSEC-2026-2706
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.