Cross-site scripting in tinymce - #VU131917
Published: May 20, 2026
Vulnerability identifier: #VU131917
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 JavaScript.
The vulnerability exists due to improper SVG namespace scope handling in the sanitizer when parsing crafted content with nested SVG elements. A remote user can supply a specially crafted payload to execute arbitrary JavaScript.
User interaction is required to process the crafted content.
Remediation
Install security update from vendor's website.