Jodit has incomplete javascript: scheme normalization in sanitizeHTMLElement href check that allows link XSS — GHSA-J839-GQQ4-GF9J

Summary

### Summary jodit's `sanitizeHTMLElement` neutralizes a `javascript:` `href` using a bare `href.trim().indexOf('javascript') === 0` check. This omits the normalization jodit applies to every other URL attribute: `isDangerousUrl` strips control bytes with `value.replace(/[\u0000-\u0020]+/g, '')` and lowercases the value before testing the scheme. Because the `href` check does neither, it is bypassed by three…

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

GHSA-J839-GQQ4-GF9J

Source

GitHub

Vendor

GitHub

Published by source

2026-07-31

Last source activity

2026-07-31

Additional identifiers

CVE-2026-62324

Curated by

hlukh.ch

Related advisories and connections

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