Published: 25/11/2021 Updated: 30/11/2021
CVSS v2 Base Score: 7.5 | Impact Score: 6.4 | Exploitability Score: 10
CVSS v3 Base Score: 9.8 | Impact Score: 5.9 | Exploitability Score: 3.9
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Vulnerability Summary

WordPress prior to 5.8 lacks support for the Update URI plugin header. This makes it easier for remote malicious users 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.

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Github Repositories

WordPress Plugin Update Confusion Simple tool to detect websites vulnerable to a novel supply chain attack targeting unclaimed WordPress plugins Read more: Please don’t ‘test’ submitting other people’s plugins vavkamilcz/2021/11/25/wordpress-plugin-confusion-update-can-get-you-pwned/ galnaglicom/Wordpress_Plugin_Update_Confusion/ CVE