Cross-site scripting in WebSpellChecker Dialog plugin for CKEditor

Published: 2020-03-18
Risk Low
Patch available YES
Number of vulnerabilities 1
Exploitation vector Network
Public exploit N/A
Vulnerable software
WebSpellChecker Dialog
Web applications / Modules and components for CMS

Vendor WebSpellChecker

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) DOM-based cross-site scripting

EUVDB-ID: #VU26197

Risk: Low

CVSSv3.1: 3 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:L/A:N/E:U/RL:O/RC:C]


CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No


The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data within WYSIWYG mode in  WebSpellChecker Dialog plugin for CKEditor. A remote attacker can trick the victim to execute certain actions with content in WYSIWYG mode and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.


Install updates from vendor's website.

Vulnerable software versions

WebSpellChecker Dialog: 4.4 -

CPE2.3 External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.