CVE-2020-4046 — Authenticated XSS through embed block in WordPress

Description (CNA)

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).

Affected (CNA)

Vendor / product	Versions
WordPress / wordpress-develop	affected >= 5.4.0, < 5.4.2; affected >= 5.3.0, < 5.3.4; affected >= 5.2.0, < 5.2.7; affected >= 5.1.0, < 5.1.6; affected >= 5.0.0, < 5.0.10; affected >= 4.9.0, < 4.9.15; affected >= 4.8.0, < 4.8.14; affected >= 4.7.0, < 4.7.18; affected >= 4.6.0, < 4.6.19; affected >= 4.5.0, < 4.5.22; affected >= 4.4.0, < 4.4.23; affected >= 4.3.0, < 4.3.24; affected >= 4.2.0, < 4.2.28; affected >= 4.1.0, < 4.1.31; affected >= 4.0.0, < 4.0.31; affected >= 3.9.0, < 3.9.32; affected >= 3.8.0, < 3.8.34; affected >= 3.7.0, < 3.7.34

Vendor / product

Versions

WordPress / wordpress-develop

affected >= 5.4.0, < 5.4.2; affected >= 5.3.0, < 5.3.4; affected >= 5.2.0, < 5.2.7; affected >= 5.1.0, < 5.1.6; affected >= 5.0.0, < 5.0.10; affected >= 4.9.0, < 4.9.15; affected >= 4.8.0, < 4.8.14; affected >= 4.7.0, < 4.7.18; affected >= 4.6.0, < 4.6.19; affected >= 4.5.0, < 4.5.22; affected >= 4.4.0, < 4.4.23; affected >= 4.3.0, < 4.3.24; affected >= 4.2.0, < 4.2.28; affected >= 4.1.0, < 4.1.31; affected >= 4.0.0, < 4.0.31; affected >= 3.9.0, < 3.9.32; affected >= 3.8.0, < 3.8.34; affected >= 3.7.0, < 3.7.34

CWE

CWE-80

References

ADP enrichment

CVE

No English description supplied.