Vulnerability identifier: #VU34922

Vulnerability risk: Low

CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2019-9554

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Craft CMS
Web applications / CMS

Vendor: Pixel & Tonic, Inc.

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

In the 3.1.12 Pro version of Craft CMS, XSS has been discovered in the header insertion field when adding source code at an s/admin/entries/news/new URI.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Craft CMS: 3.1.12

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External links
http://packetstormsecurity.com/files/151944/Craft-CMS-3.1.12-Pro-Cross-Site-Scripting.html
http://www.exploit-db.com/exploits/46496

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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. However, proof of concept for this vulnerability is available.