HOMEVULNERABILITIESCVE-2026-59214
CRITICAL

CVE-2026-59214

CWE-79Published: July 9, 2026· Updated: Jul 10, 2026

9.0
CVSS v3.1
EPSS:0.25%probability of exploitation in 30 daysPercentile:15.7th

Official Description

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, Open WebUI runs client-side Python with Pyodide in a same-origin web worker, allowing stored chat payloads that use pyodide.http.pyfetch or the js module fetch and XMLHttpRequest APIs to issue authenticated same-origin requests when a victim clicks Run, which can reach admin-only endpoints and execute server-side code through configured tools. This issue is fixed in version 0.10.0.

NVD Source

Risk Analysis

This critical vulnerability in Open WebUI allows stored chat payloads to execute authenticated same-origin requests, potentially leading to server-side code execution. With a CVSS score of 9.0, this flaw poses a significant risk, as it can reach admin-only endpoints. The absence of an EPSS score means the exploitation likelihood is not yet quantified, but the severity is high.

No public exploit is currently known for this vulnerability. Exploitation requires a user to click 'Run' on a malicious chat payload, making it remotely exploitable with low attack complexity.

Recommended Action

Upgrade Open WebUI to version 0.10.0 or later to fix this issue. Users should also exercise caution when interacting with chat payloads from untrusted sources.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2026-59214 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.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.0.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionRequired
ScopeChanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Affected Vendors & Products

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

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
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Official Patches & Advisories

All References (1)

Quick Facts

CVE IDCVE-2026-59214
CVSS Score9.0 / 10
SeverityCRITICAL
WeaknessCWE-79
CISA KEVNo
EPSS (30d)0.25%
Affected1 vendor(s)
PublishedJul 9, 2026

Related CVEs (CWE-79)

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2026-59214 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. CVE data is provided under the NVD usage policy.