CVE-2026-66047

ProfilePress (wp-user-avatar) WordPress plugin before 4.17.2 contains an unauthenticated remote code execution vulnerability that allows unauthenticated attackers to install and activate arbitrary plugins by brute-forcing a weak 32-bit connect token via the ppress_connect_process AJAX handler. Attackers can supply a caller-controlled URL through the file request parameter to trigger silent plugin installation and activation, achieving PHP code execution as the web-server user.

Score

CVSS 4.0 9.2 Critical

Status

Deferred - disclosure@vulncheck.com

Published

2026-08-31

Last modified

2026-10-01

Weaknesses

CWE-306, CWE-330

Affected products

• Profilepress (Properfraction)

References

• https://profilepress.com/changelog/
• https://wordpress.org/plugins/wp-user-avatar/
• https://www.vulncheck.com/advisories/profilepress-wordpress-plugin-unauthenticated-arbitrary-plugin-installation-rce