#VU96269 Stored cross-site scripting in Joomla! - CVE-2024-27186

Vulnerability identifier: #VU96269

Vulnerability risk: Low

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

CVE-ID: CVE-2024-27186

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Joomla!
Web applications / CMS

Vendor: Joomla!

Description

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

The vulnerability exists due to insufficient sanitization of user-supplied data in HTML mail templates. A remote user 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

Joomla!: 4.0.0 - 4.0.6, 4.1.0 - 4.1.5, 4.2.0 - 4.2.9, 4.3.0 - 4.3.4, 4.4.0 - 4.4.6, 5.0.0 - 5.0.3, 5.1.0 - 5.1.2

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External links
https://developer.joomla.org/security-centre/944-20240803-core-xss-in-html-mail-templates.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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