SB2026102831 - Cross-site scripting in SCEditor

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Main Vulnerability Database SB2026102831

SB2026102831 - Cross-site scripting in SCEditor

Published: October 28, 2026

Security Bulletin ID SB2026102831
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Cross-site scripting (CVE-ID: N/A)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: 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]


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.


Remediation

Install update from vendor's website.

References