Nuxt MDC has an XSS vulnerability in markdown rendering that bypasses HTML filtering

Description

A remote script-inclusion / stored XSS vulnerability in @nuxtjs/mdc lets a Markdown author inject a <base href="https://attacker.tld"> element.

Recommendation

Update the @nuxtjs/mdc package to the latest compatible version. Followings are version details:

• Affected version(s): < 0.17.2
• Patched version(s): 0.17.2

References

• GHSA-cj6r-rrr9-fg82
• CVE-2025-54075
• CWE-79
• CAPEC-310
• OWASP 2021-A3
• OWASP 2021-A6

Related Issues

• http-proxy-middleware allows fixRequestBody to proceed even if bodyParser has failed - CVE-2025-32997
• Parsed HTML anchor links in Markdown provided to parseMarkdown can result in XSS in @nuxtjs/mdc - CVE-2025-24981
• DOM Clobbering Gadget found in Rspack's AutoPublicPathRuntimeModule that leads to XSS - Vulnerability
• Vite Server Options (server.fs.deny) can be bypassed using double forward-slash (//) - CVE-2023-34092

Tags:

npm

@nuxtjs/mdc