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Bypassing Sanitization using DOM clobbering in html-janitorGHSA-fx46-whrj-73v5

MEDIUM

GHSA-fx46-whrj-73v5 is a medium-severity (CVSS 6.1) CWE-642 vulnerability in html-janitor. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

Also known asCVE-2017-0928
Published
Updated
Affected
1 pkg
Patched
See advisory
Exploits
None indexed
Exploitation data as of Nov 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.0%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs64th percentile — riskier than 64% of all scored CVEsHighest risk
0.00%0.51%1.03%1.54%0.2%1.0%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

15other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
html-janitornpm
386Kdownloads / week

Description

All versions of html-janitor are vulnerable to cross-site scripting (XSS).

Arbitrary HTML can pass the sanitization process, which can be unexpected and dangerous (XSS) in case user-controlled input is passed to the clean function."

Recommendation

Upgrade to version 2.0.4 or later.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
📦npmhtml-janitorall versionsNo fix

Affected Products

1 product · 1 configurations
Application
html-janitortheguardian
1 version
2.0.2

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for html-janitor, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Remediation status

    The records we use list no patched version of html-janitor for GHSA-fx46-whrj-73v5. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

All versions of `html-janitor` are vulnerable to cross-site scripting (XSS). Arbitrary HTML can pass the sanitization process, which can be unexpected and dangerous (XSS) in case user-controlled input is passed to the clean function." ## Recommendation Upgrade to version 2.0.4 or later.
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