SlimStat Analytics Vulnerability – Authenticated (Subscriber+) Stored Cross-Site Scripting – CVE-2024-1073 | WordPress Plugin Vulnerability Report

Plugin Name: SlimStat Analytics

Key Information:

  • Software Type: Plugin
  • Software Slug: wp-slimstat
  • Software Status: Active
  • Software Author: mostafas1990
  • Software Downloads: 6,082,430
  • Active Installs: 90,000
  • Last Updated: February 5, 2024
  • Patched Versions: 5.1.4
  • Affected Versions: <= 5.1.3

Vulnerability Details:

  • Name: SlimStat Analytics <= 5.1.3
  • Title: Authenticated (Subscriber+) Stored Cross-Site Scripting (XSS)
  • Type: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
  • CVE: CVE-2024-1073
  • CVSS Score: 6.4
  • Publicly Published: February 1, 2024
  • Researcher: Lucio Sá
  • Description: The SlimStat Analytics plugin, a popular analytics tool used on over 90,000 WordPress sites, has been identified as vulnerable to Stored Cross-Site Scripting attacks in versions up to and including 5.1.3. The vulnerability arises from inadequate input sanitization and output escaping within the 'filter_array' parameter, enabling authenticated users with at least subscriber-level access to embed malicious scripts into web pages.


SlimStat Analytics, known for its robust tracking capabilities within WordPress environments, has been compromised by a Stored XSS vulnerability in its earlier versions, specifically up to 5.1.3. This security flaw allows individuals with subscriber-level permissions or higher to execute arbitrary scripts, posing a significant risk to site integrity and user data. The plugin developers have promptly addressed this issue, releasing a patched version, 5.1.4, to mitigate the risk.

Detailed Overview:

This vulnerability was brought to light by cybersecurity researcher Lucio Sá, who highlighted the potential for malicious actors to exploit the 'filter_array' parameter within SlimStat Analytics. Stored XSS vulnerabilities are particularly concerning due to their persistent nature; once injected, malicious scripts can be executed repeatedly, affecting numerous users. The implications range from minor nuisances to severe security breaches, including data theft, session hijacking, and site defacement. The update to version 5.1.4 is a critical measure to close this security gap and protect WordPress sites using SlimStat Analytics.

Advice for Users:

  • Immediate Action: Users of SlimStat Analytics should immediately update to version 5.1.4, ensuring their sites are safeguarded against this vulnerability.
  • Check for Signs of Vulnerability: Site administrators are advised to review their analytics settings and page contents for any anomalies or unexpected scripts, particularly if they have used versions up to 5.1.3.
  • Alternate Plugins: While the patched version is secure, users may consider exploring other analytics plugins, especially if they seek features or security assurances not covered by SlimStat Analytics.
  • Stay Updated: This incident underscores the importance of regular updates. Keeping all WordPress components current is essential for maintaining a secure and efficient online presence.


The swift action by the developers of SlimStat Analytics in response to the discovery of CVE-2024-1073 exemplifies the critical nature of software maintenance in the digital age. For WordPress site owners, particularly small businesses reliant on their online platforms, such incidents serve as a reminder of the continuous need for vigilance in plugin management. Ensuring that your site operates on the latest versions of all plugins and themes is not just a best practice—it's a necessity for security and reliability.



In the intricate web of digital innovation, WordPress plugins stand as vital cogs, powering functionalities that transform static websites into dynamic, interactive platforms. Yet, the recent identification of a vulnerability within the SlimStat Analytics plugin, tagged as CVE-2024-1073, casts a stark light on the delicate balance between utility and security. This tool, pivotal for deriving insightful analytics across over 90,000 WordPress sites, has encountered a flaw that could potentially turn it into a conduit for unwarranted intrusions, highlighting the evergreen importance of cybersecurity vigilance.

About the Plugin:

SlimStat Analytics is renowned for its robust capability to track and analyze website traffic directly within the WordPress dashboard. Authored by mostafas1990, it boasts over 6 million downloads, underscoring its popularity and critical role in the WordPress ecosystem. However, with great utility comes the responsibility of ensuring ironclad security—a duty that has recently been tested.

Vulnerability Insights:

CVE-2024-1073 unveils a Stored Cross-Site Scripting (XSS) vulnerability in SlimStat Analytics versions up to 5.1.3. This flaw, resulting from insufficient input sanitization and output escaping within the 'filter_array' parameter, opens the door for authenticated users with minimal subscriber-level access to embed harmful scripts. The breach was publicized by researcher Lucio Sá on February 1, 2024, prompting immediate attention.

Risks and Potential Impacts:

The implications of CVE-2024-1073 are far-reaching, extending beyond mere data compromise to potentially undermining the very integrity of affected websites. Malicious scripts, once embedded, can execute a range of detrimental actions, from hijacking user sessions to redirecting visitors to malevolent sites. For small business owners, the stakes are particularly high, as such breaches can erode customer trust and tarnish reputations painstakingly built over time.

Remediation Steps:

In response to this vulnerability, the SlimStat Analytics team swiftly released patch version 5.1.4, effectively neutralizing the identified threat. Users are urged to update their plugin without delay to this latest version to fortify their defenses against potential exploitation. Additionally, conducting regular audits of site content and user permissions can serve as proactive measures to detect and deter unauthorized activities.

Historical Context:

It's noteworthy that SlimStat Analytics has navigated the security landscape before, with 16 vulnerabilities reported since January 2015. This history not only underscores the plugin's resilience and the developers' commitment to security but also serves as a reminder of the dynamic nature of cyber threats and the necessity for ongoing vigilance.

In conclusion, the discovery and remediation of CVE-2024-1073 within SlimStat Analytics epitomize the perpetual cat-and-mouse game that defines cybersecurity. For small business owners, whose ventures increasingly rely on digital platforms, the episode reinforces the imperative of regular software updates and the cultivation of cybersecurity awareness. Staying abreast of vulnerabilities and ensuring timely application of patches are not mere technical chores but fundamental practices that safeguard digital assets, sustain customer trust, and secure the future of businesses in the ever-evolving digital arena.

Staying Secure

Staying on top of WordPress security can feel overwhelming for small business owners without dedicated IT staff. At Your WP Guy, we exist to shoulder that burden for you. Our WordPress experts can fully audit, secure, maintain and support your site - so you can focus on growing your business with peace of mind.

Don't tackle security risks alone. Let us help you assess any impact from this vulnerability, update your plugins, and implement ongoing maintenance to avoid future threats. We treat your website like it's our own - because we know how critical it is for reaching your customers.

Get in touch for a free consultation today on making WordPress security stress-free. Call 678-995-5169 or book a call here. Our knowledgeable team is ready to help you safeguard your online presence.


SlimStat Analytics Vulnerability – Authenticated (Subscriber+) Stored Cross-Site Scripting – CVE-2024-1073 | WordPress Plugin Vulnerability Report FAQs

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