The Login as User plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 1.0.3. This is due to the handle_return_to_admin() function trusting a client-controlled cookie (oclaup_original_admin) to determine which user to authenticate as, without any server-side verification that the cookie value was legitimately set during an admin-initiated user switch. This makes it possible for authenticated attackers, with Subscriber-level access and above, to escalate their privileges to administrator by setting the oclaup_original_admin cookie to an administrator's user ID and triggering the "Return to Admin" functionality.
History

Wed, 15 Apr 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 15 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
First Time appeared Royalnavneet
Royalnavneet login As User – Switch User & Woocommerce Login As Customer
Wordpress
Wordpress wordpress
Vendors & Products Royalnavneet
Royalnavneet login As User – Switch User & Woocommerce Login As Customer
Wordpress
Wordpress wordpress

Wed, 15 Apr 2026 08:30:00 +0000

Type Values Removed Values Added
Description The Login as User plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 1.0.3. This is due to the handle_return_to_admin() function trusting a client-controlled cookie (oclaup_original_admin) to determine which user to authenticate as, without any server-side verification that the cookie value was legitimately set during an admin-initiated user switch. This makes it possible for authenticated attackers, with Subscriber-level access and above, to escalate their privileges to administrator by setting the oclaup_original_admin cookie to an administrator's user ID and triggering the "Return to Admin" functionality.
Title Login as User <= 1.0.3 - Authenticated (Subscriber+) Privilege Escalation via 'oclaup_original_admin' Cookie
Weaknesses CWE-639
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published: 2026-04-15T07:45:29.695Z

Updated: 2026-04-15T16:13:15.117Z

Reserved: 2026-04-05T15:42:32.653Z

Link: CVE-2026-5617

cve-icon Vulnrichment

Updated: 2026-04-15T13:32:31.709Z

cve-icon NVD

Status : Received

Published: 2026-04-15T09:16:33.210

Modified: 2026-04-15T09:16:33.210

Link: CVE-2026-5617

cve-icon Redhat

No data.