CVE-2026-64638
HighCVSS 8.9Exploitation Probability (EPSS)
Elevated risk52th percentile - higher than 52% of all known CVEs
Summary
WordPress is vulnerable to a pre-auth reflected XSS vulnerability on the login screen. Via a specially crafted malicious third-party website, it is possible to escalate to RCE, but requires social engineering and explicit interaction by the victim. This issue affects all versions of WordPress; version 7.0.3 has been released with a fix, backported to all branches back to 4.7.
Risk Assessment
An attacker could hijack a user session or execute malicious code, potentially leading to full site compromise. However, this requires user interaction.
Recommendation
Immediately update WordPress to version 7.0.3 or later, and educate users about the risk of clicking suspicious links.
Other vulnerabilities in WordPress
See all- CVE-2012-6707High
WordPress through version 4.8.2 uses a weak MD5-based password hashing algorithm, making it easier for attackers to determine cleartext values by leveraging access to the hash values.
- CVE-2017-9066High
In WordPress before version 4.7.5, there is insufficient redirect validation in the HTTP class, leading to SSRF vulnerability.
- CVE-2017-9065High
In WordPress before version 4.7.5, there is a lack of capability checks for post meta data in the XML-RPC API.
- CVE-2017-9064High
In WordPress before version 4.7.5, a Cross Site Request Forgery (CSRF) vulnerability exists in the filesystem credentials dialog because a nonce is not required for updating credentials.
- CVE-2017-9062High
In WordPress before version 4.7.5, there is improper handling of post meta data values in the XML-RPC API.
- CVE-2016-6896High
A directory traversal vulnerability in the wp_ajax_update_plugin function in WordPress 4.5.3 allows remote authenticated users to cause a denial of service or read certain text files via a .. (dot dot) in the plugin parameter to wp-admin/admin-ajax.php.
- CVE-2017-5489High
The CSRF vulnerability in WordPress before version 4.7.1 allows remote attackers to hijack the authentication of unspecified victims via vectors involving Flash file uploads.
- CVE-2016-4029High
WordPress before 4.5 does not consider octal and hexadecimal IP address formats when determining an intranet address, which allows remote attackers to bypass an intended SSRF protection mechanism via a crafted address.
- CVE-2016-5839High
WordPress versions before 4.5.3 allow remote attackers to bypass the sanitize_file_name protection mechanism via unspecified vectors.
- CVE-2016-5838High
WordPress before 4.5.3 allows remote attackers to bypass intended password-change restrictions by leveraging knowledge of a cookie.
Original NVD description (English source)
WordPress is vulnerable to a pre-auth reflected XSS vulnerability on the login screen. Via a specially crafted malicious third-party website hosted by an attacker, it is possible for this to be escalated to an RCE vulnerability with conditions outside of the attackers control. This requires successful social engineering of and explicit interaction by the target victim. This issue affects all versions of WordPress. Version 7.0.3 has been released, containing a fix for the vulnerability, and as a courtesy to users on older branches the fix has been backported to all branches back to 4.7. Discovered and responsibly disclosed by [the team at pwn.ai](https://pwn.ai/).