Risk Letters

Exploited vulnerability

CVE-2026-66047

TLP:CLEAR

properfraction profilepress Missing Authentication for Critical Function

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.

Facts

  • Vendor: Proper Fraction
  • Product: ProfilePress
  • EPSS (probability of exploitation within 30 days): 0.9 %
  • First known exploitation: 16 September 2026
  • First seen by Risk Letters: 16 September 2026

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD