Vulnerability · Published May 15, 2026 · Assigned by GitHub_M

CVE-2026-45347Open WebUI: Blind server side request forgery (SSRF) via the PDF generate function

Medium 4.3

In plain English

A medium-severity server-side request forgery 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 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.2%top 91.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.5.11, there is a blind server side request forgery (SSRF) via the PDF generate function. In the PDF export, user inputs are interpreted as HTML and embedded into the PDF. According to tests, scripts and some potentially dangerous tags (iFrame, Object, etc.) are blocked, preventing server-side content from being read through this vulnerability. However, an image tag can be used to force a server-side request (SSRF), as shown in the following below. This vulnerability is fixed in 0.5.11.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	open-webui	0.5.11	GHSA-f776-fp4w-266c
PyPI	open-webui	0.5.11	PYSEC-2026-2723

Affected products (as reported)

Vendor	Product	Versions
open-webui	open-webui	< 0.5.11

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References

https://github.com/open-webui/open-webui/security/advisories/GHSA-f776-fp4w-266c x_refsource_CONFIRM