GitHub Advisoryadvisory · npm
GHSA-25fq-6qgg-qpj8 SCEditor has DOM XSS via emoticon URL/HTML injection
MEDIUM
Official page ↗
- Aliases
- CVE-2026-25581
- Ecosystem
- npm
- Packages
- sceditor
- Severity
- Moderate
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- Weaknesses
- CWE-79
- Reviewed
- 2026-02-06
Affected packages
• npm sceditor: < 3.2.1 → fixed in 3.2.1
Description
If an attacker has the ability control configuration options passed to `sceditor.create()`, like `emoticons`, `charset`, etc. then it's possible for them to trigger an XSS attack due to lack of sanitisation of configuration options.
Proof of concept:
```js
sceditor.create(textarea, {
emoticons: {
dropdown: { ':)': { url: 'x" onerror="window.__xss = true' } }
}
});
```
Related
Alias · CVE (1)
- CVE-2026-25581 SCEditor is a lightweight WYSIWYG BBCode and XHTML editor. vulnerability
Weakness · CWE (1)
- CWE-79 Improper Neutralization of Input During Web Page Generation weakness