CVE-2020-4046

Description

In affected versions of WordPress, users with low privileges (like contributors and authors) can use the embed block in a certain way to inject unfiltered HTML in the block editor. When affected posts are viewed by a higher privileged user, this could lead to script execution in the editor/wp-admin. This has been patched in version 5.4.2, along with all the previously affected versions via a minor release (5.3.4, 5.2.7, 5.1.6, 5.0.10, 4.9.15, 4.8.14, 4.7.18, 4.6.19, 4.5.22, 4.4.23, 4.3.24, 4.2.28, 4.1.31, 4.0.31, 3.9.32, 3.8.34, 3.7.34).

References

https://www.debian.org/security/2020/dsa-4709

https://wordpress.org/news/2020/06/wordpress-5-4-2-security-and-maintenance-release/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODNHXVJS25YVWYQHOCICXTLIN5UYJFDN/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/773N2ZV7QEMBGKH6FBKI6Q5S3YJMW357/

https://lists.debian.org/debian-lts-announce/2020/07/msg00000.html

https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-rpwf-hrh2-39jf

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3