What is CVE-2026-45331?

CVE-2026-45331 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-2026-45331?

High severity. CVSS v3 base score is 8.5 out of 10.

SSRF in Open-webui

CVE-2026-45331

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, validate_url() in backend/open_webui/retrieval/web/utils.py calls validators.ipv6(ip, private=True), but the validators libr…

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.000 (2.2th 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 < 0.9.0
Openwebui Open_webui

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2026-45331?: CVE-2026-45331 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-2026-45331?: High severity. CVSS v3 base score is 8.5 out of 10.