Vulnerability Description
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/).
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-64638?
CVE-2026-64638 is a documented vulnerability. 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 esc...
How severe is CVE-2026-64638?
CVSS scoring is not yet available for CVE-2026-64638. Check NVD for updates.
Is there a patch for CVE-2026-64638?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.