Incomplete List of Disallowed Inputs Affecting @nuxtjs/mdc package, versions <0.22.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-NUXTJSMDC-19883915
- published17 Sept 2026
- disclosed16 Sept 2026
- creditrz1027
Introduced: 16 Sep 2026
NewCVE-2026-63671 (opens in a new tab)How to fix?
Upgrade @nuxtjs/mdc to version 0.22.1 or higher.
Overview
@nuxtjs/mdc is a Nuxt MDC module
Affected versions of this package are vulnerable to Incomplete List of Disallowed Inputs in validateProp and isAnchorLinkAllowed in src/runtime/parser/utils/props.ts. An attacker can execute script in the page origin or load active HTML in an iframe by supplying untrusted markdown with SVG xlink:href="javascript:..." or src="data:text/html,..." at the default configuration. The parser accepts raw HTML by default, so rendered markdown can retain these unsafe URLs and expose users to XSS when they interact with the SVG link or when the iframe loads.