CVE-2021-44223

PoC —

CVSS 3.1

9.8 critical

EPSS

29%p98

Published

Nov 25, 2021 (Nov 25, 2021)

Modified

Jun 17, 2026

Description

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.

Vendors: wordpress
Products: wordpress
Ecosystems: WordPress
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (29.0%)

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