Cross-site scripting in TinyMCE - #VU131918
Published: May 20, 2026 / Updated: May 20, 2026
Vulnerability identifier: #VU131918
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: tinymce
Affected software:
TinyMCE
TinyMCE
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary script code in a victim's browser.
The vulnerability exists due to cross-site scripting in data-mce-* attribute handling when parsing and serializing content containing data-mce-href, data-mce-src, or data-mce-style attributes. A remote user can inject malicious attribute values to execute arbitrary script code in a victim's browser.
User interaction is required to process crafted content.
Remediation
Install security update from vendor's website.