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Unratedamended

Cross-Site Scripting bypass in html-purify

GHSA-5p28-63mc-cgr9

What to do

Vendor response not established. Follow the primary source's mitigation guidance and check back for a fix.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • npm html-purify

    Affected
    <= 1.1.0
    Fixed in
    no fixed version recorded

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
not scored
EPSS
No dated EPSS signal available.
Source description

As published by the source; long descriptions are shortened.

All versions of html-purify are vulnerable to cross-site scripting. The data attribute inside of object tags is not properly sanitized and allows javascript URIs leading to code execution. No fix is currently available. Consider using an alternative package until a fix is made available.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 2 · amended ·

    Amended from ghsa record GHSA-5p28-63mc-cgr9

  2. Revision 1 · created ·

    Published from osv record GHSA-5p28-63mc-cgr9

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: GHSA-5p28-63mc-cgr9

Advisory: Cross-Site Scripting bypass in html-purify
IDs: GHSA-5p28-63mc-cgr9
Record: https://patchnext.com/advisories/ghsa-5p28-63mc-cgr9 (revision 2, source checked 26 Oct 2026, 12:15 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Unrated
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor response not established. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm html-purify: affected <= 1.1.0

## Suggested inspection (read-only)
- `npm ls html-purify --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on html-purify.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-5p28-63mc-cgr9 (OSV record GHSA-5p28-63mc-cgr9 lists affected ranges: npm html-purify >=0 <=1.1.0)
- Verified: https://github.com/advisories/GHSA-5p28-63mc-cgr9 (GitHub-reviewed advisory GHSA-5p28-63mc-cgr9 lists affected ranges: npm html-purify >=0 <=1.1.0)

Commands are suggestions: review each one before running it.

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