Vulnerability library
Security checkJuly 31, 2026

sanitize-html has incomplete URI scheme validation in that allows javascript: URIs through action, formaction, data, pos

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Medium severitynpmsanitize-html

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Description

sanitize-html uses allowedSchemesAppliedToAttributes (default: ['href', 'src', 'cite']) to gate the naughtyHref() function that blocks dangerous URI schemes like javascript: and vbscript:.

Recommendation

Update the sanitize-html package to the latest compatible version. Followings are version details:

  • Affected version(s): >= 1.18.0, <= 2.17.4
  • Patched version(s): 2.17.5

References

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Related Issues

See something that needs correcting? Let us knowUpdated July 31, 2026