Cross-site scripting in Jodit Editor - CVE-2026-58263
Published: November 10, 2026
Vulnerability identifier: #VU164391
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-58263
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary JavaScript in a victim's browser through stored cross-site scripting without user interaction.
The vulnerability exists due to improper HTML sanitization in Jodit Editor's clean-html plugin when reparsing MathML/style rawtext exposes elements whose event handlers escape subsequent filtering. A remote attacker can supply '<math><mtext><table><mglyph><style><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" onload=alert(document.domain)></style></mglyph></table></mtext></math>' through value-setting or insertion paths to execute script when a consumer renders the resulting editor output.
Affected software
Jodit Editor
How to mitigate CVE-2026-58263
Install security update from vendor's website.
Jodit Editor - update to 4.12.28