CVE-2020-4048 Open redirect in wp_validate_redirect() in WordPress
An attacker can craft a link that redirects users to an arbitrary external site, potentially facilitating phishing attacks against WordPress users.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2020-4048?
CVE-2020-4048 is a medium-severity vulnerability in Debian Debian Linux, published on 12 Jun 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
In affected versions of WordPress, due to an issue in wp_validate_redirect() and URL sanitization, an arbitrary external link can be crafted leading to unintended/open redirect when clicked. 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).
Weakness: CWE-601
Which versions are affected by CVE-2020-4048?
2 open source packages ship an affected version, including wordpress and wordpress-multisite. It affects 3 products.
| Package | Affected | Fixed in |
|---|---|---|
wordpress Bitnami | From 3.7.0 | 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 |
wordpress-multisite Bitnami | From 3.7.0 | 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 |
Products include Debian Debian Linux, Fedoraproject Fedora, Wordpress Wordpress.
How do I fix CVE-2020-4048?
Upgrade wordpress to a fixed version for your release line: 3.7.34, 3.8.34, 3.9.32 or 4.0.31.
Is CVE-2020-4048 being exploited?
There is no known exploitation of CVE-2020-4048 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as BIT-wordpress-2020-4048, BIT-wordpress-multisite-2020-4048, DEBIAN-CVE-2020-4048, GHSA-q6pw-gvf4-5fj5, UBUNTU-CVE-2020-4048.