Vulnerability identifier: #VU52362

Vulnerability risk: Low

CVSSv3.1: 6.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N/E:U/RL:U/RC:C]

CVE-ID: CVE-2021-3163

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Quill
Web applications / Modules and components for CMS

Vendor: Quilljs

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 a text field. A remote attacker can inject 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
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Quill: 0.0.1 - 2.0.0

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External links
http://burninatorsec.blogspot.com/2021/04/cve-2021-3163-xss-slab-quill-js.html
http://github.com/quilljs/quill/issues/3273
http://quilljs.com

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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.