CVE-2026-66047

9.2 criticalEPSS 0.9%

Critical (9.2). EPSS 0.9% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

9.2 critical

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

CVSS 3.1

8.1 high

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.9% chance of exploitation in the next 30 days; higher than 60% of CVEs (scores of 2026-10-31)
CWEs: CWE-306, CWE-330
Published: 2026-08-31
Modified: 2026-09-08
Record from: the NVD, synced 2026-10-19

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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