CVE-2026-45317 MEDIUM

CVE-2026-45317: Open WebUI: Cross-Site Request Forgery (CSRF) via Image URL Manipulation

Vendor Open-Webui
Product open-webui
Weakness CWE-20 · Input validation
Published May 15, 2026
Last update May 18, 2026

CVSS base score

4.6/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality Low
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.3, an application-wide Cross-Site Request Forgery (CSRF) vulnerability was found Open-WebUl's image uploading functionality. An attacker can set an image URL to a malicious endpoint, allowing them to perform actions on behalf of a victim user. Any authenticated user can exploit this vulnerability, and any user who views the compromised image (e.g., a profile picture) will unknowingly send a GET request to the attacker-controlled URL. This can lead to cookie theft, denial of service (DoS), or other malicious actions. This vulnerability is fixed in 0.9.3.

Key dates

02Disclosure timeline

May 15, 2026 CVE published
May 18, 2026 Record updated