Cross-site scripting in SCEditor - #VU158276
Published: October 28, 2026
Vulnerability identifier: #VU158276
CSH Severity: Low
CVSS v4: 5.1 [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]
CVE-ID: N/A
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary JavaScript in a victim's browser in the context of an affected application.
The vulnerability exists due to improper neutralization of executable HTML in SCEditor's toBBCode() method when converting untrusted HTML to BBCode. A remote user can supply malicious HTML such as <img src="/x.png" onerror="document.body.xss()"> to execute arbitrary JavaScript when a victim uses an application that processes this content.
The editor itself is not vulnerable.
Affected software
SCEditor
Remediation
Install security update from vendor's website.
SCEditor - update to 3.2.3