Vulnerability Monitor

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CVE-2021-44223

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.

Published

2021-11-25T15:15:09.800

Last Modified

2024-11-21T06:30:36.947

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.1 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Primary
NVD-CWE-Other

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	wordpress	wordpress	< 5.8	Yes

References

https://make.wordpress.org/core/2021/06/29/introducing-update-uri-plugin-header-in-wordpress-5-8/ Release Notes, Vendor Advisory ([email protected])
https://vavkamil.cz/2021/11/25/wordpress-plugin-confusion-update-can-get-you-pwned/ Exploit, Third Party Advisory ([email protected])
https://make.wordpress.org/core/2021/06/29/introducing-update-uri-plugin-header-in-wordpress-5-8/ Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://vavkamil.cz/2021/11/25/wordpress-plugin-confusion-update-can-get-you-pwned/ Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)