CVE-2026-124494

CriticalCVSS 9.3/10Last modified Nov 12, 2026

Description

SunEditor before 3.4.0 contains a stored cross-site scripting vulnerability because the html.clean() sanitizer's _normalizeURL() function decodes named entities like &colon; to an empty string. Attackers can inject href values such as javascript&colon; that pass the _isSafeURL() check but are decoded by browsers, executing JavaScript when victims click stored links.

Metrics

CVSS 4.0 9.3/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weakness enumeration

CWE-79

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
JiHong88	suneditor	< 3.4.0

References

Timeline

Published: Nov 8, 2026
Last modified: Nov 12, 2026
NVD status: Awaiting Analysis

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