Vulnerabilities / Login using WordPress Users ( WP as SAML IDP ) / WPSEC-2026-0872
Login using WordPress Users ( WP as SAML IDP ) <= 2.0.1 - Unauthenticated Denial of Service via SP Tracking Cookie
High 7.5
CWE-834Fixed in 2.0.2
- ID
- WPSEC-2026-0872
- Plugin
- SAML IDP (Identity Provider) – Login with Website Users (miniorange-wp-as-saml-idp)
- Affected
- all versions before 2.0.2
- Remediation
- Update to 2.0.2 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness
- CWE-834
- Usage
- Plugin Low · Affected versions None seen among sites WPSec scans, 2026-10-14
- Attack surface
- Login using WordPress Users ( WP as SAML IDP ) on WPSec AttackSurface
- Fix released
- Published
Description
The SAML IDP (Identity Provider) plugin for WordPress is vulnerable to Denial of Service via the mo_sp_count cookie in all versions up to, and including, 2.0.1. The mo_idp_add_sp_cookie() function uses the cookie value supplied by the user as the upper bound of a loop without checking or limiting it. This makes it possible for unauthenticated attackers to send a request with a very large mo_sp_count value. Each request then keeps a PHP worker busy until the maximum execution time is reached, and a small number of concurrent requests can make the site unavailable.
References
- https://wpsec.com/vuln/WPSEC-2026-0872/
- https://plugins.svn.wordpress.org/miniorange-wp-as-saml-idp/tags/2.0.2/
- https://wordpress.org/plugins/miniorange-wp-as-saml-idp/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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