#VU56462 Information disclosure in WordPress - CVE-2021-39200

Vulnerability identifier: #VU56462

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-39200

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
WordPress
Web applications / CMS

Vendor: WordPress.ORG

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in the "wp_die()" function. A remote attacker can gain unauthorized access to sensitive information on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

WordPress: 5.2.1 - 5.2.12, 5.3.1 - 5.3.9, 5.4.1 - 5.4.7, 5.5.1 - 5.5.6, 5.6.1 - 5.6.5, 5.7 - 5.7.3, 5.8

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External links
https://hackerone.com/reports/1142140
https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-m9hc-7v5q-x8q5

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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.