PT-2026-6845 · Npm · Sceditor

Published 2026-02-06 · Updated 2026-02-06

OSV

CVSS v3.1

5.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

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' } }
 }
});

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

GHSA-25FQ-6QGG-QPJ8

Affected Products

Sceditor

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-25581 · Security Note
• https://osv.dev/vulnerability/GHSA-25fq-6qgg-qpj8 · Vendor Advisory
• https://github.com/samclarke/SCEditor/security/advisories/GHSA-25fq-6qgg-qpj8 · Note
• https://github.com/samclarke/SCEditor/commit/5733aed4f0e257cb78e1ba191715fc458cbd473d · Note
• https://github.com/samclarke/SCEditor · Note