Executive Summary
In May 2026, two critical vulnerabilities were discovered in the Avada Builder WordPress plugin, affecting over one million active installations. The first, CVE-2026-4782, is an arbitrary file read vulnerability exploitable by authenticated users with at least subscriber-level access, allowing them to read sensitive files on the server. The second, CVE-2026-4798, is a time-based blind SQL injection vulnerability that can be exploited without authentication, enabling attackers to extract sensitive information from the database, including password hashes. Both vulnerabilities have been patched in version 3.15.3 of the plugin.
This incident underscores the importance of timely software updates and the potential risks associated with widely used plugins. Organizations should prioritize patch management and consider implementing additional security measures to protect against similar vulnerabilities in the future.
Why This Matters Now
The discovery of these vulnerabilities highlights the ongoing risks posed by popular plugins in the WordPress ecosystem. With over one million sites affected, it's crucial for administrators to update to the latest version immediately to prevent potential data breaches and unauthorized access.
Attack Path Analysis
An unauthenticated attacker exploited an SQL injection vulnerability in the Avada Builder plugin to extract sensitive information from the WordPress database. Subsequently, the attacker leveraged an arbitrary file read vulnerability to access critical files, including wp-config.php, leading to full site compromise. The attacker then established persistent access and exfiltrated sensitive data, resulting in significant impact on the website's integrity and confidentiality.
Kill Chain Progression
Initial Compromise
Description
An unauthenticated attacker exploited an SQL injection vulnerability (CVE-2026-4798) in the Avada Builder plugin to extract sensitive information from the WordPress database.
Related CVEs
CVE-2026-4782
CVSS 6.5The Avada Builder plugin for WordPress is vulnerable to Arbitrary File Read in all versions up to, and including, 3.15.2 via the 'fusion_get_svg_from_file' function with the 'custom_svg' parameter of the 'fusion_section_separator' shortcode. This makes it possible for authenticated attackers, with Subscriber-level access and above, to read the contents of arbitrary files on the server, which can contain sensitive information.
Affected Products:
ThemeFusion Avada Builder – <= 3.15.2
Exploit Status:
no public exploitCVE-2026-4798
CVSS 7.5The Avada Builder plugin for WordPress is vulnerable to time-based SQL Injection via the 'product_order' parameter in all versions up to, and including, 3.15.1 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
Affected Products:
ThemeFusion Avada Builder – <= 3.15.1
Exploit Status:
no public exploit
MITRE ATT&CK® Techniques
Exploit Public-Facing Application
SQL Stored Procedures
Data from Local System
Databases
Process Injection
Potential Compliance Exposure
Mapping incident impact across multiple compliance frameworks.
PCI DSS 4.0 – Secure Coding Practices
Control ID: 6.5.1
NYDFS 23 NYCRR 500 – Cybersecurity Policy
Control ID: 500.03
DORA – ICT Risk Management
Control ID: Article 5
CISA ZTMM 2.0 – Application Security
Control ID: 3.1
NIS2 Directive – Security of Network and Information Systems
Control ID: Article 21
Sector Implications
Industry-specific impact of the vulnerabilities, including operational, regulatory, and cloud security risks.
Computer Software/Engineering
WordPress plugin vulnerabilities expose one million sites to credential theft, arbitrary file access, and SQL injection attacks requiring immediate patching.
Internet
Web application flaws in popular Avada Builder plugin enable unauthenticated database extraction and sensitive file reading across WordPress websites.
E-Learning
Educational platforms using WordPress with WooCommerce face SQL injection risks and credential exposure through compromised Avada Builder plugin installations.
Online Publishing
Publishing websites vulnerable to authentication bypass and database compromise through CVE-2026-4782 and CVE-2026-4798 exploiting subscriber-level access requirements.
Sources
- Avada Builder WordPress plugin flaws allow site credential thefthttps://www.bleepingcomputer.com/news/security/avada-builder-wordpress-plugin-flaws-allow-site-credential-theft/Verified
- 1,000,000 WordPress Sites Affected by Arbitrary File Read and SQL Injection Vulnerabilities in Avada Builder WordPress Pluginhttps://www.wordfence.com/blog/2026/05/1000000-wordpress-sites-affected-by-arbitrary-file-read-and-sql-injection-vulnerabilities-in-avada-builder-wordpress-plugin/Verified
- NVD - CVE-2026-4782https://nvd.nist.gov/vuln/detail/CVE-2026-4782Verified
- NVD - CVE-2026-4798https://nvd.nist.gov/vuln/detail/CVE-2026-4798Verified
Frequently Asked Questions
Cloud Native Security Fabric Mitigations and ControlsCNSF
Aviatrix Zero Trust CNSF is pertinent to this incident as it could have limited the attacker's ability to exploit vulnerabilities and move laterally within the cloud environment, thereby reducing the overall impact of the breach.
Control: Cloud Native Security Fabric (CNSF)
Mitigation: The attacker's ability to exploit the SQL injection vulnerability may have been constrained, limiting unauthorized access to the WordPress database.
Control: Zero Trust Segmentation
Mitigation: The attacker's ability to access critical files like wp-config.php could have been limited, reducing the risk of privilege escalation.
Control: East-West Traffic Security
Mitigation: The attacker's ability to move laterally within the environment could have been constrained, reducing the scope of unauthorized access.
Control: Multicloud Visibility & Control
Mitigation: The attacker's ability to establish persistent access could have been limited, reducing the risk of ongoing unauthorized control.
Control: Egress Security & Policy Enforcement
Mitigation: The attacker's ability to exfiltrate sensitive data could have been constrained, reducing the risk of data loss.
The overall impact of the attack could have been reduced, limiting the extent of data compromise and reputational damage.
Impact at a Glance
Affected Business Functions
- Website Content Management
- E-commerce Transactions
- User Authentication
Estimated downtime: 3 days
Estimated loss: $5,000
Potential exposure of sensitive configuration files and user data, including password hashes.
Recommended Actions
Key Takeaways & Next Steps
- • Implement input validation and parameterized queries to prevent SQL injection vulnerabilities.
- • Restrict file access permissions to limit exposure of sensitive files like wp-config.php.
- • Regularly update and patch plugins to mitigate known vulnerabilities.
- • Monitor and audit user activities to detect unauthorized access attempts.
- • Educate users on the importance of strong, unique passwords to reduce the risk of credential compromise.
