Vulnerability · Published May 15, 2026 · Assigned by GitHub_M
CVE-2026-45317Open WebUI: Cross-Site Request Forgery (CSRF) via Image URL Manipulation
Medium 4.6
In plain English
A medium-severity improper input validation in open-webui from open-webui. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | open-webui | 0.9.3 | GHSA-j6w6-986j-2m2m |
| PyPI | open-webui | 0.9.3 | PYSEC-2026-2738 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| open-webui | open-webui | < 0.9.3 |
Weakness: CWE-20, CWE-352 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L
References
- https://github.com/open-webui/open-webui/security/advisories/GHSA-j6w6-986j-2m2m x_refsource_CONFIRM