VulnerabilityDeferred

CVE-2025-3605

The Frontend Login and Registration Blocks plugin for WordPress is vulnerable to privilege escalation via account takeover in all versions up to, and including, 1.1.1.

CRITICAL 9.8EPSS 6.94%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (6.94%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

The Frontend Login and Registration Blocks plugin for WordPress is vulnerable to privilege escalation via account takeover in all versions up to, and including, 1.1.1. This is due to the plugin not properly validating a user's identity prior to updating their details like email via the flr_blocks_user_settings_handle_ajax_callback() function. This makes it possible for unauthenticated attackers to change arbitrary user's email addresses, including administrators, and leverage that to reset the user's password and gain access to their account.

CVSS 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 6.94% probability · 94th percentile
CISA KEV: Not listed
Weakness: CWE-639
Source: security@wordfence.com

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.