What’s Vulnerable › Vulnerabilities

CVE-2026-66047: ProfilePress WordPress Plugin < 4.17.2 Unauthenticated Arbitrary Plugin Installation RCE

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-31 · updated 2026-09-08
• Weakness: CWE-306

Description

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.

Affected products

• Proper Fraction ProfilePress: before 4.17.2 — fixed in 4.17.2

How to fix

Upgrade to a fixed version: Proper Fraction ProfilePress 4.17.2. Check the vendor advisory for mitigations.

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

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