# CVE-2026-66047

## Summary

- **CVE ID:** CVE-2026-66047
- **Severity:** CRITICAL
- **CVSS Score:** 9.2 (CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-306, CWE-330
- **Published:** Aug 31, 2026
- **Last Modified:** Sep 2, 2026

## 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 (0)

## References

- [CNA](https://profilepress.com/changelog/)
- [CNA](https://wordpress.org/plugins/wp-user-avatar/)
- [CNA](https://www.vulncheck.com/advisories/profilepress-wordpress-plugin-unauthenticated-arbitrary-plugin-installation-rce)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.54%
- **EPSS Percentile:** 43.6

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._