CVE-2021-44223

HIGH

WordPress < 5.8 - Remote Code Execution via Plugin Update URI Spoofing

Title source: llm
STIX 2.1

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.

References (2)

Core 2

Scores

CVSS v3 8.1
EPSS 0.2749
EPSS Percentile 96.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

Status published
Products (1)
wordpress/wordpress < 5.8
Published Nov 25, 2021
Tracked Since Feb 18, 2026