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OpenAdvisories
Medium · 4.6 CVE-2026-45317 EUVD-2026-30658GHSA-j6w6-986j-2m2mPYSEC-2026-2738

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

Published May 15, 2026 · Updated May 18, 2026 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
open-webui open-webui < 0.9.3 —

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI open-webui < 0.9.3 0.9.3 GHSA-j6w6-986j-2m2m

References