Vulnerability Description
Jodit Editor is a WYSIWYG editor with a built-in file browser & image editor. In versions prior to 4.12.28, the built-in clean-html sanitizer can be bypassed by a MathML/<style> carrier that hides a dangerous element from the sanitizer's element walk, so a no-interaction event handler survives into the editor value, potentially causing Mutation XSS. When an application supplies attacker-influenced HTML to the editor's value-set or insertion paths, the sanitized output still contains a live <img ... onload=...> (or another non-onerror handler such as onfocus). A consumer that renders that output (element.innerHTML = editor.value) executes the handler with no user interaction. This issue has been fixed in version 4.12.28.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/xdan/jodit/security/advisories/GHSA-rxcw-mc6f-6hr3
- https://github.com/xdan/jodit/security/advisories/GHSA-rxcw-mc6f-6hr3
FAQ
What is CVE-2026-58263?
CVE-2026-58263 is a vulnerability with a CVSS score of 7.2 (HIGH). Jodit Editor is a WYSIWYG editor with a built-in file browser & image editor. In versions prior to 4.12.28, the built-in clean-html sanitizer can be bypassed by a MathML/<style> carrier that hides a d...
How severe is CVE-2026-58263?
CVE-2026-58263 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-58263?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.