Vulnerability identifier: #VU56417

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
WordPress
Web applications / CMS

Vendor: WordPress.ORG

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions to the REST API endpoint. A remote non-authenticated attacker can bypass implemented security restrictions and gain access to sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

WordPress: 5.8, 5.7 - 5.7.2, 5.6 - 5.6.4, 5.5 - 5.5.5, 5.4 - 5.4.6, 5.3 - 5.3.8, 5.2 - 5.2.11

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External links
http://wordpress.org/news/2021/09/wordpress-5-8-1-security-and-maintenance-release/

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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.