Cross-site scripting in TinyMCE

1) Cross-site scripting

EUVDB-ID: #VU97241

Risk: Medium

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-2024-38357

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

Exploit availability: No

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. 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 update from vendor's website.

Vulnerable software versions

tinymce: before 7.2.0

External links

http://github.com/tinymce/tinymce/security/advisories/GHSA-w9jx-4g6g-rp7x
http://github.com/tinymce/tinymce/commit/5acb741665a98e83d62b91713c800abbff43b00d
http://owasp.org/www-community/attacks/xss
http://www.tiny.cloud/docs/tinymce/6/6.8.4-release-notes/#overview
http://www.tiny.cloud/docs/tinymce/7/7.2-release-notes/#overview

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.