Medium severity · published May 15, 2026
CVE-2026-45347
Open WebUI: Blind server side request forgery (SSRF) via the PDF generate function
5.4
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
open-webui · open-webui
< 0.5.11 · source: vendor
OW
Open Webui · Openwebui
before 0.5.11 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-45347
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-45347
Exploit
https://github.com/open-webui/open-webui/security/advisories/GHSA-f776-fp4w-266c
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