#VU59289 Code injection in WordPress - CVE-2022-21663

Vulnerability identifier: #VU59289

Vulnerability risk: Low

CVSSv4.0: 6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-21663

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
WordPress
Web applications / CMS

Vendor: WordPress.ORG

Description

The vulnerability allows a remote user to execute arbitrary code on the system.

The vulnerability exists due to improper input validation in some multisite installations. A remote user with Super Admin role can bypass explicit/additional hardening and inject certain objects.

Successful exploitation of this vulnerability may result in complete compromise of web application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

WordPress: 3.7 - 3.7.36, 3.8 - 3.8.36, 3.9 - 3.9.34, 4.0 - 4.0.33, 4.1 - 4.1.33, 4.2 - 4.2.30, 4.3 - 4.3.26, 4.4 - 4.4.25, 4.5 - 4.5.24, 4.6 - 4.6.21, 4.7 - 4.7.21, 4.8 - 4.8.17, 4.9 - 4.9.18, 5.0 - 5.0.14, 5.1 - 5.1.11, 5.2 - 5.2.13, 5.3 - 5.3.10, 5.4 - 5.4.8, 5.5 - 5.5.7, 5.6 - 5.6.6, 5.7 - 5.7.4, 5.8 beta 1 - 5.8.2

---

External links
https://wordpress.org/news/2022/01/wordpress-5-8-3-security-release/

---

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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