Vulnerability Report

CVE-2026-45338

Title: Server-Side Request Forgery

SSRF

Proof Of Concept

No public PoC currently indexed for CVE-2026-45338.

CWE Category CWE-918

Published Date May 15, 2026

Modified Date May 18, 2026

Exploit Status Not Found

Score 7.7 CVSS v3.1

Exploit Probability (EPSS)

0.38%

Vulnerability Summary

CVE-2026-45338: Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, a Server-Side Request Forgery (SSRF) vulnerability exists in _process_picture_url() in backend/open_webui/utils/oauth.py (line ~1338). The function fetches arbitrary URLs from OAuth picture claims without applying validate_url(), allowing an attacker to force the server to make HTTP requests to internal resources and exfiltrate the full response. This vulnerability is fixed in 0.9.0.

Impacted Vendors

openwebui 1

Reference Links

https://github.com/open-webui/open-webui/security/advisories/GHSA-24c9-2m8q-qhmh

CVSS v3.1

Source Entity [email protected]

Severity HIGH

7.7

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

CHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-45338 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

May 18, 2026 MODIFIED

Vulnerability data updated via NVD.

May 18, 2026 MODIFIED

Vulnerability data updated via NVD.

May 15, 2026 MODIFIED

Vulnerability data updated via NVD.

May 15, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


                                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Affected Stack

No specific products linked.