Frequently Asked Questions

WordPress Vulnerabilities & CVE-2024-10924

What is CVE-2024-10924 and how does it affect WordPress sites?

CVE-2024-10924 is a critical authentication bypass vulnerability in the Really Simple Security plugin (formerly Really Simple SSL) for WordPress. It affects both free and Pro versions (9.0.0 to 9.1.1.1) when the “Two-Factor Authentication” setting is enabled. The flaw allows unauthenticated attackers to log in as any user, including administrators, due to improper error handling in the two-factor REST API actions. This vulnerability can be exploited at scale using automated scripts, potentially leading to widespread website takeover campaigns. For more details, see BleepingComputer and NIST.

Which versions of the Really Simple Security plugin are vulnerable to CVE-2024-10924?

Versions 9.0.0 to 9.1.1.1 of the Really Simple Security plugin (Free, Pro, and Pro Multisite) are vulnerable when the “Two-Factor Authentication” setting is enabled. By default, 2FA is disabled, but it is strongly recommended to update these plugin versions immediately to mitigate risk.

What is the impact of the CVE-2024-10924 vulnerability on WordPress sites?

The CVE-2024-10924 vulnerability allows unauthenticated attackers to gain full administrative control of affected WordPress sites by exploiting the two-factor authentication mechanism. This can result in widespread website takeover campaigns, as attackers can use automated scripts to compromise multiple sites at scale.

How can I check if my WordPress site is impacted by CVE-2024-10924?

If your site uses the Really Simple Security plugin (versions 9.0.0 to 9.1.1.1) and has the “Two-Factor Authentication” setting enabled, it is vulnerable. By default, 2FA is disabled, but it is recommended to update the plugin immediately. IONIX customers can view updated vulnerability information in the Threat Center of the IONIX portal.

Where can I find more information about CVE-2024-10924?

More information is available in the IONIX blog post, BleepingComputer, and the NIST vulnerability database.

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IONIX provides complete external web footprint identification, proactive security management, real attack surface visibility, and continuous discovery and inventory of internet-facing assets. These capabilities help organizations improve risk management, reduce mean time to resolution (MTTR), and optimize security operations. For more details, visit Why Ionix.

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E.ON: Improved risk management by continuously discovering and inventorying internet-facing assets (case study).
Warner Music Group: Boosted operational efficiency and aligned security operations with business goals (case study).
Grand Canyon Education: Enhanced security by proactively discovering and remediating vulnerabilities (case study).

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Where can I find the IONIX blog and what topics does it cover?

The IONIX blog is available at this page. It covers topics such as cybersecurity, risk management, exposure management, vulnerability management, and industry trends. Key authors include Amit Sheps and Fara Hain.

What is the focus of the blog titled 'CVE-2024-10924 Explained: Security Plugin Flaw in Millions of WordPress Sites'?

This blog post explains the security flaw in the Really Simple Security plugin for WordPress, affecting millions of sites. It details the vulnerability mechanism, impact, and recommended actions for site owners. Read the post at this link.

Company, Recognition & Competitive Position

What recognition has IONIX received in the cybersecurity industry?

IONIX is a recognized leader in cybersecurity, named a leader in the 2025 KuppingerCole Attack Surface Management Leadership Compass and winner of the Winter 2023 Digital Innovator Award from Intellyx. The company has secured Series A funding to expand its platform capabilities. For more details, visit this page.

Who are some of IONIX's customers?

IONIX's customers include Infosys, Warner Music Group, The Telegraph, E.ON, Grand Canyon Education, and a Fortune 500 Insurance Company. For more details, visit IONIX Customers.

How does IONIX differentiate itself from competitors?

IONIX stands out for its ML-based 'Connective Intelligence' that discovers more assets with fewer false positives, Threat Exposure Radar for prioritizing critical issues, comprehensive digital supply chain coverage, and streamlined remediation workflows. Unlike alternatives, IONIX reduces noise, validates risks, and provides actionable insights for maximum risk reduction and operational efficiency. Learn more at Why IONIX.

Go back to All Blog posts

CVE-2024-10924 Explained: Security plugin flaw in millions of WordPress sites

Nethanel Gelernter
Nethanel Gelernter Co-Founder and CTO LinkedIn
November 19, 2024
Security alert: Zero-day vulnerability update for CVE-2024-10924 affecting millions of WordPress sites due to a security plugin flaw.

IONIX Tracks CVE-2024-10924 Security plugin flaw in millions of WordPress sites: This post is based on ongoing security research – and will continue to be updated as we get additional information…

What is CVE-2024-10924?

A critical authentication bypass vulnerability has been identified in the WordPress plugin Really Simple Security (formerly known as Really Simple SSL), affecting both its free and Pro versions.

Acording to an article in Bleeping Computer, the vulnerability, tracked as CVE-2024-10924, was discovered by Wordfence researcher István Márton on November 6, 2024. Ironically, it stems from an issue with the two-factor authentication mechanism, which, instead of enhancing security, has inadvertently created a critical weakness.

The Really Simple Security (Free, Pro, and Pro Multisite) plugin for WordPress is vulnerable to authentication bypass in versions 9.0.0 to 9.1.1.1 when the “Two-Factor Authentication” setting is enabled.
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, even an administrator.

To exacerbate the situation, the flaw is exploitable at scale using automated scripts, raising the possibility of widespread website takeover campaigns. Wordfence, the security company that publicly disclosed the vulnerability, described it as one of the most severe flaws in its 12-year history. The vulnerability enables remote attackers to gain full administrative control of affected websites.

Given the gravity of the issue, Wordfence has recommended that hosting providers force-update the plugin on their customers’ sites and conduct database scans to ensure no vulnerable versions remain in use.

What is the Really Simple Security plugin for WordPress?

The Really Simple Security (Free, Pro, and Pro Multisite) is a popular security plugin designed for WordPress, offering features such as SSL configuration, login protection, two-factor authentication (2FA), and real-time vulnerability scanning. The plugin’s free version is actively installed on over four million websites.

Am I impacted by CVE-2024-10924?

The RSS plugin is vulnerable to authentication bypass when the “Two-Factor Authentication” setting is enabled. Note that by default 2FA is disabled for the plugin. Still, we recommend updating the plugin versions 9.0.0 to 9.1.1.1 immediately.

IONIX customers will see updated information in the threat center of the IONIX portal.

References

Bleeping Computer article
NIST article

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