Detections
Analytics

CVE-2026-64638

high

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/).

References

https://thehackernews.com/2026/08/bdthemes-supply-chain-attack-poisons.html

https://thehackernews.com/2026/08/new-wordpress-pre-auth-xss-could-lead.html

https://pwn.ai/blog/xss2shell

https://github.com/kaleth4/CVE-2026-64638

https://github.com/SanaullahAmanullah/xss2shell-check

https://github.com/Alixploit22/CVEX2SHEL

https://github.com/g0d150ne/XSS2Shell

https://github.com/tc4dy/CVE-2026-64638-PoC-Exploit

https://github.com/yogaGymn/XSS2Shell-CVE-2026-64638

https://github.com/renzi25031469/CVE-2026-64638-WordPress-Core-XSS2Shell

https://github.com/0xBlackash/CVE-2026-64638

https://github.com/5yu4n/CVE-2026-64638

https://github.com/HORKimhab/CVE-2026-64638

https://wordpress.org/news/2026/08/wordpress-7-0-3-release/

https://hackerone.com/reports/3877102

Details

Source: Mitre, NVD

Published: 2026-08-07

Updated: 2026-09-03

Named Vulnerability: XSS2Shell

Risk Information

CVSS v2

Base Score: 3.5

Vector: CVSS2#AV:N/AC:M/Au:S/C:N/I:P/A:N

Severity: Low

CVSS v3

Base Score: 5.4

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Severity: Medium

CVSS v4

Base Score: 8.9

Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Severity: High

EPSS

EPSS: 0.31204