SSRF in Open-webui
CVE-2026-45401
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.5, the validate_url() function in backend/open_webui/retrieval/web/utils.py only validates the initial URL submitted by the cal…
Vulnerability class: SSRF (Server-Side Request Forgery)
EPSS: 0.000 (11.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N.
Affected products
- Open-webui — versions < 0.9.5
- Openwebui Open_webui
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-45401?
- CVE-2026-45401 is a high-severity vulnerability in Open-webui, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.5/10. Published 2026-05-15.
- How severe is CVE-2026-45401?
- High severity. CVSS v3 base score is 8.5 out of 10.
- Is CVE-2026-45401 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.