cvedb.io
CVE-2025-24981
CRITICAL · CVSS 9.3
EPSS exploitation probability: 0%
Published 2025-02-06T18:15:32.847 · Last modified 2026-06-17T08:59:55.240

Summary

MDC is a tool to take regular Markdown and write documents interacting deeply with a Vue component. In affected versions unsafe parsing logic of the URL from markdown can lead to arbitrary JavaScript code due to a bypass to the existing guards around the `javascript:` protocol scheme in the URL. The parsing logic implement in `props.ts` maintains a deny-list approach to filtering potential malicious payload. It does so by matching protocol schemes like `javascript:` and others. These security guards can be bypassed by an adversarial that provides JavaScript URLs with HTML entities encoded via hex string. Users who consume this library and perform markdown parsing from unvalidated sources could result in rendering vulnerable XSS anchor links. This vulnerability has been addressed in version

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.