CVE-2026-124494JiHong88 suneditor Cross-site Scripting (XSS)
NVD
Vulnerability Summary
SunEditor before 3.4.0 contains a stored cross-site scripting vulnerability because the html.clean() sanitizer's _normalizeURL() function decodes named entities like : to an empty string. Attackers can inject href values such as javascript: that pass the _isSafeURL() check but are decoded by browsers, executing JavaScript when victims click stored links.
CVSS v4.0 Base Metrics — Score 9.3 (CRITICAL)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:H/SI:H/SA:NAttack VectorNetwork
Attack ComplexityLow
Attack RequirementsNone
Privileges RequiredNone
User InteractionActive
Confidentiality (Vulnerable System)High
Integrity (Vulnerable System)High
Availability (Vulnerable System)None
Confidentiality (Subsequent System)High
Integrity (Subsequent System)High
Availability (Subsequent System)None
Affected & Patched Versions
- JiHong88 suneditor < 3.4.0
- JiHong88 suneditor 3.4.0
What to do
Plan remediation soon. No exploitation is confirmed yet, but the severity is critical.
- Check whether you run JiHong88 suneditor and which version.
- Update to a patched version listed above, then confirm the new version.
Timeline
- Nov 8, 2026Published
- Nov 10, 2026Record last modified
Score, severity and exploitation changes are tracked from the day Watchtower started logging them.
Get notified about new JiHong88 suneditor CVEsYou are reading CVE-2026-124494. Get an email when KEV listings, exploits or new CVEs match your stack.
Set up CVE alertsExternal References
Data last checked: Nov 14, 2026 02:13 UTC