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Fencer Intel
high —

GHSA-m7qm-r2r5-f77q json

Cross-Site Scripting in react-marked-markdown

published 6y ago modified 5y ago

cvss
—
not scored
cisa kev
Not listed
not in CISA's catalog
epss
—
no score, EPSS covers CVEs only
public exploits
0
none known

Summary

All versions of `react-marked-markdown` are vulnerable to cross-site scripting (XSS) via `href` attributes. This is exploitable if user is provided to `react-marked-markdown`

Proof of concept:

``` import React from 'react' import ReactDOM from 'react-dom' import { MarkdownPreview } from 'react-marked-markdown'

ReactDOM.render( <MarkdownPreview markedOptions={{ sanitize: true }} value={'[XSS](javascript: alert`1`)'} />, document.getElementById('root') ) ```

## Recommendation

No fix is currently available for this vulnerability. It is our recommendation to not install or use this module at this time if you allow user input into href values.

Is GHSA-m7qm-r2r5-f77q in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Affected packages

ecosystem package affected fixed in
npm react-marked-markdown
>=0.0.0
 no fix listed

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.