HOMEVULNERABILITIESCVE-2026-45347
MEDIUM

CVE-2026-45347

CWE-918Published: May 15, 2026· Updated: May 18, 2026

5.4
CVSS v3.1
EPSS:0.03%probability of exploitation in 30 daysPercentile:7.6th

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.

NVD Source

Technical Analysis

CVE-2026-45347 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Affected Vendors & Products

openwebui1 product
open webui
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

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

All References (2)

→
https://github.com/open-webui/open-webui/security/advisories/GHSA-f776-fp4w-266cExploit · Patch · Vendor Advisory
→
https://github.com/open-webui/open-webui/security/advisories/GHSA-f776-fp4w-266cExploit · Patch · Vendor Advisory

Quick Facts

CVE IDCVE-2026-45347
CVSS Score5.4 / 10
SeverityMEDIUM
WeaknessCWE-918
CISA KEVNo
EPSS (30d)0.03%
Affected1 vendor
PublishedMay 15, 2026

Related CVEs (CWE-918)

CVE-2026-26150
10.0
CVE-2026-26138
10.0
CVE-2026-32871
10.0
CVE-2026-35431
10.0
CVE-2026-32169
10.0
CVE-2026-13773
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-45347 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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