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.

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History

Thu, 12 Nov 2026 01:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Sun, 08 Nov 2026 16:00:00 +0000

Type Values Removed Values Added
First Time appeared Jihong88
Jihong88 suneditor
Vendors & Products Jihong88
Jihong88 suneditor

Sun, 08 Nov 2026 13:30:00 +0000

Type Values Removed Values Added
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 : 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.
Title SunEditor before 3.4.0 Stored XSS via : Entity Sanitizer Bypass
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 9.3, 'vector': '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'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-10T17:53:45.128Z

Reserved: 2026-11-08T02:21:16.290Z

Link: CVE-2026-124494

cve-icon Vulnrichment

Updated: 2026-11-10T16:26:19.863Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-08T14:18:19.277

Modified: 2026-11-12T20:28:31.817

Link: CVE-2026-124494

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-08T15:45:14Z

Weaknesses