Jodit has cross-site scripting (XSS) via <script> nested in SVG that bypasses clean-html sanitization — CVE-2026-65841

Summary

A `<script>` element placed directly inside an `<svg>` (or MathML) container was not removed by Jodit's clean-html sanitizer. The deny/allow tag filter compared `node.nodeName` against an upper-cased tag hash, but foreign (SVG/MathML) elements preserve their original-case node names — an SVG script reports `"script"`, not `"SCRIPT"` — so the default `denyTags` list (which includes `script`) did not match it. The…

Timeline

Published by source

2026-07-31

Risk context

• Reported severity or threat level: medium.
• Review exposure for the affected product or family: npm: jodit.

Product

npm: jodit

What to do

General, cautious steps (verify details in the official source):

• Review exposure and plan remediation based on risk and environment.
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

Evidence and provenance

Canonical advisory ID

CVE-2026-65841

Source

GitHub

Vendor

GitHub

Published by source

2026-07-31

Last source activity

2026-07-31

Additional identifiers

GHSA-45QG-252V-3F7P

Curated by

hlukh.ch

Related advisories and connections

These advisories are connected by shared CVE, product, vendor, source, or time signals.