Aggregates CVE and security vulnerability intelligence across all mermaid_project-related products, including CVSS, EPSS, publication dates, and vulnerability intelligence data.
Historical issues mainly involve vendor risk cross-site scripting and vendor risk input validation and related problems; some flaws may lead to vendor impact session compromise and vendor impact unexpected behavior.
| CVE | Summary | Source | Max CVSS | EPSS % | Published | Updated |
|---|---|---|---|---|---|---|
| CVE-2026-41159 | Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Prior to 10.9.6 and 11.15.0, Mermaid's default configuration allows injecting CSS that applies outside of the Mermaid diagram via the fontFamily, themeCSS, and altFontFamily configuration options. The injected CSS exploits stylis's & (scope reference) handling. :not(&) escapes the #mermaid-xxx automatic scoping, applying styles to all page elements. Global at-rules (@font-face, @keyframes, @c | [email protected] | 5.3 | 0.06% | 2026-05-29 | 2026-06-01 |
| CVE-2026-41150 | Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Prior to 10.9.6 and 11.15.0, there is a denial-of-service attack when rendering gantt charts, if they use the excludes attribute to exclude all dates. mermaid.parse is unaffected, unless you then call the ganttDb.getTasks() (which is called when rendering a diagram). This vulnerability is fixed in 10.9.6 and 11.15.0. | [email protected] | 5.3 | 0.06% | 2026-05-29 | 2026-06-01 |
| CVE-2025-54880 | 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 11.9.0 and earlier, user supplied input for architecture diagram icons is passed to the d3 html() method, creating a sink for cross site scripting. This vulnerability is fixed in 11.10.0. | [email protected] | 5.1 | 0.02% | 2025-08-19 | 2025-10-20 |
| CVE-2022-31108 | Mermaid is a JavaScript based diagramming and charting tool that uses Markdown-inspired text definitions and a renderer to create and modify complex diagrams. An attacker is able to inject arbitrary `CSS` into the generated graph allowing them to change the styling of elements outside of the generated graph, and potentially exfiltrate sensitive information by using specially crafted `CSS` selectors. The following example shows how an attacker can exfiltrate the contents of an input field by brut | [email protected] | 4.1 | 0.22% | 2022-06-28 | 2024-11-21 |
| CVE-2021-43861 | Mermaid is a Javascript based diagramming and charting tool that uses Markdown-inspired text definitions and a renderer to create and modify complex diagrams. Prior to version 8.13.8, malicious diagrams can run javascript code at diagram readers' machines. Users should upgrade to version 8.13.8 to receive a patch. There are no known workarounds aside from upgrading. | [email protected] | 7.2 | 0.49% | 2021-12-30 | 2024-11-21 |
| CVE-2021-35513 | Mermaid before 8.11.0 allows XSS when the antiscript feature is used. | [email protected] | 6.1 | 0.31% | 2021-06-27 | 2024-11-21 |