by Kastro
Paper/Archive/CVE-2021-44223

CVE-2021-44223

mitre — WordPress before 5.8 lacks support for the Update URI plugin header.

EPSS 29%CVSS 9.8
critical.is priorityof 100
49
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 98.2.982 × 2019.6No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
n/an/a–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
mitre (CNA)8.1CVSS:3.1/AC:H/AV:N/A:H/C:H/I:H/PR:N/S:U/UI:N

References

refvavkamil.cz/2021/11/25/wordpress-plugin-confusion-update-can-get-you-pwnedrefmake.wordpress.org/core/2021/06/29/introducing-update-uri-plugin-header-in-wordpress-5-8