GitStock

samclarke/sceditor · Security

SCEditor has DOM XSS via emoticon URL/HTML injection

GHSA ID
GHSA-25fq-6qgg-qpj8
CVE ID
CVE-2026-25581
Severity
medium
Published
Updated
CVSS
5.4 · CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS v3
5.4 · CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

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:

sceditor.create(textarea, {
  emoticons: {
    dropdown: { ':)': { url: 'x" onerror="window.__xss = true' } }
  }
});

CWEs

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

References

Open GitHub