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Public proof of conceptFix available

CVE-2025-64496

A public proof of concept exists; no exploitation attested.

  • Published2025-11-08
  • Fixed in0.6.35
  • WeaknessCWE-501 · CWE-829 · CWE-830

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Versions 0.6.224 and prior contain a code injection vulnerability in the Direct Connections feature that allows malicious external model servers to execute arbitrary JavaScript in victim browsers via Server-Sent Event (SSE) execute events. This leads to authentication token theft, complete account takeover, and when chained with the Functions API, enables remote code execution on the backend server. The attack requires the victim to enable Direct Connections (disabled by default) and add the attacker's malicious model URL, achievable through social engineering of the admin and subsequent users. This issue is fixed in version 0.6.35.

Timeline

dates in UTC
  1. 2025-11-0802:15CVE publishedNVD

Versions per branch

NVD · OSV
Openwebui open webui
BranchAffectedFixed in
0.6< 0.6.350.6.35

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As GitHub_M, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • open-webui
    Affected
    • = < 0.6.35no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2025-11-08

Fix

  1. Update Openwebui open webui to 0.6.35

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionpoc2025-11-13
  • CNACVSS 3.17.3known since 2026-10-23
  • NVDCVSS 3.18read 2026-10-23
  • CNAweakness (CWE)CWE-501, CWE-829, CWE-830, CWE-95known since 2026-10-23
  • FIRST EPSSEPSS score7.2 %2026-11-09
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryHIGH2025-11-07

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Published
2025-11-08
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-cm35-v4vp-5xvx

Frequently asked questions

What is CVE-2025-64496?

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Versions 0.6.224 and prior contain a code injection vulnerability in the Direct Connections feature that allows malicious external model servers to execute arbitrary JavaScript in victim browsers via Server-Sent Event (SSE) execute events. This leads to authentication token theft, complete account takeover, and when chained with the Functions API, enables remote code execution on the backend server. The attack requires the victim to enable Direct Connections (disabled by default) and add the attacker's malicious model URL, achievable through social engineering of the admin and subsequent users. This issue is fixed in version 0.6.35.

Is CVE-2025-64496 actively exploited?

A proof-of-concept exploit exists for CVE-2025-64496, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2025-64496?

CVE-2025-64496 has a CVSS v3 base score of 8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

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