Description
Mermaid is a JavaScript based diagramming and charting tool that uses Markdown-inspired text definitions and a renderer to create and modify complex diagrams. In the default configuration of mermaid 10.9.0-rc.1 to 11.9.0, user supplied input for sequence diagram labels is passed to innerHTML during calculation of element size, causing XSS.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| mermaid-js | mermaid | >= 10.9.0-rc.1, <= 11.9.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | node-mermaid | No fix yet | — |
| Ubuntu 22.04 LTS | node-mermaid | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | mermaid | >= 11.0.0-alpha.1, < 11.10.0 | 11.10.0 | GHSA-7rqq-prvp-x9jh |
| npm | mermaid | >= 10.9.0-rc.1, < 10.9.4 | 10.9.4 | GHSA-7rqq-prvp-x9jh |