#VU92820 Stored cross-site scripting in tinymce

Vulnerability identifier: #VU92820

Vulnerability risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green]

CVE-ID: N/A

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
tinymce
Web applications / JS libraries

Vendor: tinymce

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 when parsing noscript elements. A remote attacker can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

tinymce: 5.0.0 - 5.10.9, 6.0.0 - 6.8.3, 7.0.0 - 7.1.2

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External links
https://github.com/tinymce/tinymce/security/advisories/GHSA-w9jx-4g6g-rp7x

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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.