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CVE-2021-44223

Date: November 25, 2021

WordPress before 5.8 lacks support for the Update URI plugin header. This makes it easier for remote attackers to execute arbitrary code via a supply-chain attack against WordPress installations that use any plugin for which the slug satisfies the naming constraints of the WordPress.org Plugin Directory but is not yet present in that directory.

Language: PHP

Severity Score

Related Resources (6)

https://vavkamil.cz/2021/11/25/wordpress-plugin-confusion-update-can-get-you-pwned/
https://nvd.nist.gov/vuln/detail/CVE-2021-44223
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-44223
https://make.wordpress.org/core/2021/06/29/introducing-update-uri-plugin-header-in-wordpress-5-8/
https://security-tracker.debian.org/tracker/CVE-2021-44223
https://www.mend.io/vulnerability-database/CVE-2021-44223

Severity Score

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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