Vulnerability identifier: #VU84032

Vulnerability risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
WordPress
Web applications / CMS

Vendor: WordPress.ORG

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can send specially crafted requests to the website and execute arbitrary code on the system.

According to the vendor, the vulnerability is not directly exploitable in core, however it can be used against installations with plugins and especially against multisite installations.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

WordPress: 6.4 - 6.4.1

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External links
http://wordpress.org/documentation/wordpress-version/version-6-4-2/

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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.