CVE-2026-25581 SCEditor affected by DOM XSS via emoticon URL/HTML injection
An attacker controlling editor configuration options can inject malicious HTML or URLs to trigger DOM-based Cross-Site Scripting in SCEditor.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-25581?
CVE-2026-25581 is a medium-severity cross-site scripting vulnerability in samclarke SCEditor, published on 6 Feb 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
SCEditor is a lightweight WYSIWYG BBCode and XHTML editor. Prior to 3.2.1, 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. This vulnerability is fixed in 3.2.1.
Weakness: CWE-79
Which versions are affected by CVE-2026-25581?
2 open source packages ship an affected version, including sceditor. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
sceditor npm | All versions | 3.2.1 |
sceditor npm | All versions | 3.2.1 |
Products include Sceditor Sceditor.
How do I fix CVE-2026-25581?
Upgrade sceditor to 3.2.1 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-25581 being exploited?
There is no known exploitation of CVE-2026-25581 in the wild and no public exploit code.
Other vulnerabilities in samclarke SCEditor
Sources
Also known as GHSA-25fq-6qgg-qpj8.