CVE Explorer
CVE-2026-54011
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6,Open WebUI renders Mermaid blocks from Markdown files in the file preview panel and inserts the generated SVG into the DOM using innerHTML. Because Mermaid is configured with securityLevel: 'loose', attacker-controlled Mermaid content can be rendered unsafely in this flow. A working payload was validated through the Markdown preview path, resulting in JavaScript execution in the vict
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"open-webui","vendor":"open-webui","versions":[{"status":"affected","version":"< 0.9.6"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:f8c55153b2fcf67f960489e0e3f3bca8d4734e1370c5445efe15d0c1bd36e9fd · sha256:995bf1361ac95ef6… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:f8c55153b2fcf67f960489e0e3f3bca8d4734e1370c5445efe15d0c1bd36e9fd · sha256:995bf1361ac95ef6… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:f8c55153b2fcf67f960489e0e3f3bca8d4734e1370c5445efe15d0c1bd36e9fd · sha256:995bf1361ac95ef6… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"tags":["exploit"],"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-v8qj-hxv7-mgvv"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f8c55153b2fcf67f960489e0e3f3bca8d4734e1370c5445efe15d0c1bd36e9fd · sha256:995bf1361ac95ef6… · /containers/adp/0/references/0
{"name":"https://github.com/open-webui/open-webui/security/advisories/GHSA-v8qj-hxv7-mgvv","tags":["x_refsource_CONFIRM"],"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-v8qj-hxv7-mgvv"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f8c55153b2fcf67f960489e0e3f3bca8d4734e1370c5445efe15d0c1bd36e9fd · sha256:995bf1361ac95ef6… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.