Vulnerability identifier: #VU78670

Vulnerability risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-37905

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
CKEditor-WordCount-Plugin
Web applications / Modules and components for CMS

Vendor: w8tcha

Description

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 in Source Mode of Editor. A remote attacker can trick the victim to follow a specially crafted link 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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

CKEditor-WordCount-Plugin: 0.13 - 1.17.11

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External links
http://github.com/w8tcha/CKEditor-WordCount-Plugin/commit/0f03b3e5b7c1409998a13aba3a95396e6fa349d8
http://github.com/w8tcha/CKEditor-WordCount-Plugin/commit/a4b154bdf35b3465320136fcb078f196b437c2f1
http://github.com/w8tcha/CKEditor-WordCount-Plugin/security/advisories/GHSA-q9w4-w667-qqj4

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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.