CVE-2026-124492
Published:November 08, 2026
Updated:November 09, 2026
SunEditor before 3.4.0 contains a stored cross-site scripting vulnerability in ModalAnchorEditor's #createBookmarkList, which inserts entity-decoded h1-h6 header textContent into the bookmark list via innerHTML without escaping. Attackers can store HTML-encoded payloads in editor headers that execute JavaScript when a victim opens the link modal and types # in the URL input.
Affected Packages
https://github.com/JiHong88/suneditor.git (GITHUB):
Affected version(s) >=2.37.0 <3.4.0 || >=3.0.0 <3.4.0Fix Suggestion:
Update to version 3.4.0suneditor (NPM):
Affected version(s) >=3.0.0 <3.4.0 || >=3.0.0-alpha.13 <3.4.0 || >=2.37.0 <3.4.0Fix Suggestion:
Update to version 3.4.0Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.6
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Neutralization of Input During Web Page Generation