CVE-2026-64638

NameCVE-2026-64638
DescriptionWordPress 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/).
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-6427-1
Debian Bugs1143843

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
wordpress (PTS)bullseye5.7.11+dfsg1-0+deb11u1vulnerable
bullseye (security)5.7.14+dfsg1-0+deb11u1vulnerable
bookworm, bookworm (security)6.1.9+dfsg1-0+deb12u1vulnerable
trixie6.8.3+dfsg1-0+deb13u1vulnerable
trixie (security)6.8.7+dfsg1-0+deb13u1fixed
forky7.0.2+dfsg1-1vulnerable
sid7.0.3+dfsg1-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
wordpresssourcetrixie6.8.7+dfsg1-0+deb13u1DSA-6427-1
wordpresssource(unstable)7.0.3+dfsg1-11143843

Notes

https://wordpress.org/news/2026/08/wordpress-7-0-3-release/
https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-52p2-r8wf-jcrf

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