Vulnerability · Published Apr 15, 2026 · Assigned by Wordfence
CVE-2026-5617Login as User <= 1.0.3 - Authenticated (Subscriber+) Privilege Escalation via 'oclaup_original_admin' Cookie
High 8.8
In plain English
A high-severity authorization bypass via user-controlled key in Login as User – Switch User & WooCommerce Login as Customer from royalnavneet. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| royalnavneet | Login as User – Switch User & WooCommerce Login as Customer | 0 – through 1.0.1 |
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/c0c74d48-6cfc-4899-bd2c-4a80b1f6e05f?source=cve
- https://plugins.trac.wordpress.org/browser/one-click-login-as-user/trunk/includes/class-login-handler.php#L45
- https://plugins.trac.wordpress.org/browser/one-click-login-as-user/tags/1.0.3/includes/class-login-handler.php#L45
- https://plugins.trac.wordpress.org/browser/one-click-login-as-user/tags/1.0.3/includes/class-login-handler.php#L50
- https://wordpress.org/plugins/one-click-login-as-user/