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Medium, CVSS 6.1amended

sanitize-html is vulnerable to XSS through incomprehensive sanitization

CVE-2019-25225GHSA-qhxp-v273-g94h

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (sanitize-html 2.0.0-beta), redeploy, then verify what is actually installed.

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

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
6.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
  • CVE-2019-25225: 0.27% estimated exploitation activity in the next 30 days; percentile 19.09 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

sanitize-html prior to version 2.0.0-beta is vulnerable to Cross-site Scripting (XSS). The sanitizeHtml() function in index.js does not sanitize content when using the custom transformTags option, which is intended to convert attribute values into text. As a result, malicious input can be transformed into executable code.

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

    Amended from ghsa record GHSA-qhxp-v273-g94h

  2. Revision 1 · created ·

    Published from osv record GHSA-qhxp-v273-g94h

Agent brief

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

# Patch Next advisory brief: CVE-2019-25225

Advisory: sanitize-html is vulnerable to XSS through incomprehensive sanitization
IDs: CVE-2019-25225, GHSA-qhxp-v273-g94h
Record: https://patchnext.com/advisories/cve-2019-25225 (revision 2, source checked 26 Oct 2026, 12:37 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.1)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: sanitize-html 2.0.0-beta. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm sanitize-html: affected < 2.0.0-beta; fixed in 2.0.0-beta

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

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on sanitize-html.
- 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-qhxp-v273-g94h (OSV record GHSA-qhxp-v273-g94h lists affected ranges: npm sanitize-html >=0 <2.0.0-beta (fixed))
- Verified: https://github.com/advisories/GHSA-qhxp-v273-g94h (GitHub-reviewed advisory GHSA-qhxp-v273-g94h lists affected ranges: npm sanitize-html >=0 <2.0.0-beta)

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