Open WebUI: Stored XSS in Mermaid Markdown Preview
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| open-webui | open-webui | affected |
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No data.
| Vendor | Product | Versions | ||||||||
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| Open-webui | Open-webui |
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| Source | ID | Title |
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Github GHSA |
GHSA-v8qj-hxv7-mgvv | Open WebUI: Stored XSS in Mermaid Markdown Preview |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.336% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Open-webui
Open-webui open-webui |
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| Vendors & Products |
Open-webui
Open-webui open-webui |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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 victim’s browser under the application origin. This vulnerability is fixed in 0.9.6. | |
| Title | Open WebUI: Stored XSS in Mermaid Markdown Preview | |
| Weaknesses | CWE-79 | |
| References |
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| Metrics |
cvssV3_1
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