CVE-2020-4048: Open redirect in wp_validate_redirect() in WordPress
In affected versions of WordPress, due to an issue in wpvalidateredirect() 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).
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2020-4048.
What is the severity of CVE-2020-4048?
The severity of CVE-2020-4048 is medium (5.7).
What is the affected software for CVE-2020-4048?
The affected software for CVE-2020-4048 includes WordPress versions 3.7 to 5.4.2, Debian Linux versions 8.0 to 10.0, and Fedora versions 32 and 33.
How can I fix CVE-2020-4048?
To fix CVE-2020-4048, update WordPress to version 5.4.2 or apply the relevant patch provided by the vendor.
Where can I find more information about CVE-2020-4048?
You can find more information about CVE-2020-4048 on the WordPress Core Trac and GitHub security advisories.