CVE-2024-10924
Really Simple Security (Free, Pro, and Pro Multisite) 9.0.0 - 9.1.1.1 - Authentication Bypass
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
The Really Simple Security (Free, Pro, and Pro Multisite) plugins for WordPress are vulnerable to authentication bypass in versions 9.0.0 to 9.1.1.1. This is due to improper user check error handling in the two-factor REST API actions with the 'check_login_and_get_user' function. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, when the "Two-Factor Authentication" setting is enabled (disabled by default).
| CWE | CWE-288 |
| Vendor | really simple plugins |
| Product | really simple security pro multisite |
| Published | Nov 15, 2024 |
| Last Updated | Jan 23, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Really Simple Plugins / Really Simple Security Pro multisite
9.0.0 ≤ 9.1.1.1
rogierlankhorst / Really Simple Security – Simple and Performant Security (formerly Really Simple SSL)
9.0.0 ≤ 9.1.1.1
Really Simple Plugins / Really Simple Security Pro
9.0.0 ≤ 9.1.1.1
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/7d5d05ad-1a7a-43d2-bbbf-597e975446be?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/really-simple-ssl/tags/9.1.1.1/security/wordpress/two-fa/class-rsssl-two-factor-on-board-api.php#L67 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/really-simple-ssl/tags/9.1.1.1/security/wordpress/two-fa/class-rsssl-two-factor-on-board-api.php#L277 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/really-simple-ssl/tags/9.1.1.1/security/wordpress/two-fa/class-rsssl-two-factor-on-board-api.php#L278 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset/3188431/really-simple-ssl wordfence.com: https://www.wordfence.com/blog/2024/11/really-simple-security-vulnerability/ github.com: https://github.com/JoshuaProvoste/0-click-RCE-Exploit-for-CVE-2024-10924
Credits
István Márton