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).
How to fix
- wordpress wordpress3.7.34, 3.8.34, 3.9.32, 4.0.31, 4.1.31, 4.2.28, 4.3.24, 4.4.23, 4.5.22, 4.6.19, 4.7.18, 4.8.14, 4.9.15, 5.0.10, 5.1.6, 5.2.7, 5.3.4, 5.4.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| wordpress wordpress | 3.7 ≤ v < 3.7.34, 3.8 ≤ v < 3.8.34, 3.9 ≤ v < 3.9.32, 4.0 ≤ v < 4.0.31, 4.1 ≤ v < 4.1.31, 4.2 ≤ v < 4.2.28, 4.3 ≤ v < 4.3.24, 4.4 ≤ v < 4.4.23, 4.5 ≤ v < 4.5.22, 4.6 ≤ v < 4.6.19, 4.7 ≤ v < 4.7.18, 4.8 ≤ v < 4.8.14, 4.9 ≤ v < 4.9.15, 5.0 ≤ v < 5.0.10, 5.1 ≤ v < 5.1.6, 5.2 ≤ v < 5.2.7, 5.3.0 ≤ v < 5.3.4, 5.4 ≤ v < 5.4.2 | 3.7.34, 3.8.34, 3.9.32, 4.0.31, 4.1.31, 4.2.28, 4.3.24, 4.4.23, 4.5.22, 4.6.19, 4.7.18, 4.8.14, 4.9.15, 5.0.10, 5.1.6, 5.2.7, 5.3.4, 5.4.2 |
| debian debian_linux | 8.0, 9.0 | — |
| fedoraproject fedora | 31, 32 | — |
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Attack Surface Management
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