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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References
History
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 | |
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| Metrics |
cvssV4_0
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MITRE
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-11-08T13:16:09.907Z
Reserved: 2026-11-08T02:21:16.290Z
Link: CVE-2026-124494
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OpenCVE Enrichment
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Weaknesses