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

• Parsed HTML anchor links in Markdown provided to parseMarkdown can result in XSS in @nuxtjs/mdc - CVE-2025-24981
• @octokit/endpoint has a Regular Expression in parse that Leads to ReDoS Vulnerability Due to Catastrophic Backtracking - CVE-2025-25285
• @octokit/request-error has a Regular Expression in index that Leads to ReDoS Vulnerability Due to Catastrophic Backtrack - CVE-2025-25289
• Parse Server has a Cross-Site Scripting (XSS) vulnerability via Unescaped Mustache Template Variables - CVE-2025-68115

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Tags:

npm

@nuxtjs/mdc