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GHSA-8vm4-g489-v3w7
No affected components available
Summary
User-controlled content in comments and rich text cells was rendered via v-html without sanitization, enabling stored XSS.
Details
Comments in Comments.vue and rich text in TextArea.vue were parsed by markdown-it with html: true and injected via v-html. The codebase had vue-dompurify-html available but these paths used raw v-html. Server-side, Comment.insert() used extractProps() instead of extractPropsAndSanitize().
Commenter role is sufficient for the comments vector; Editor role for rich text.
This issue was independently reported; see also GHSA-rcph-x7mj-54mm and GHSA-wwp2-x4rj-j8rm for the same root cause found by GitHub Security Lab.
Impact
Stored XSS — malicious scripts execute for any user viewing the comment or cell.
Credit
This issue was reported by @bugbunny-research (bugbunny.ai).
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights.
Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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