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Fencer Intel
low —

GHSA-wx77-rp39-c6vg json

Regular Expression Denial of Service in markdown

published 6y ago modified 2mo 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 `markdown` are vulnerable to Regular Expression Denial of Service (ReDoS). The `markdown.toHTML()` function has significantly degraded performance when parsing long strings containing underscores. This may lead to Denial of Service if the parser accepts user input.

## Recommendation

No fix is currently available. Consider using an alternative package until a fix is made available.

Is GHSA-wx77-rp39-c6vg 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.

Check with Fencer

Affected packages

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

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

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.