CVE-2025-31396: CWE-502 Deserialization of Untrusted Data in themeton FLAP - Business WordPress Theme
Deserialization of Untrusted Data vulnerability in themeton FLAP - Business WordPress Theme allows Object Injection. This issue affects FLAP - Business WordPress Theme: from n/a through 1.5.
AI Analysis
Technical Summary
CVE-2025-31396 is a critical security vulnerability classified under CWE-502, which pertains to the deserialization of untrusted data. This vulnerability affects the FLAP - Business WordPress Theme developed by themeton, specifically versions up to 1.5. Deserialization vulnerabilities occur when untrusted input is processed by an application to reconstruct objects, potentially allowing attackers to inject malicious objects. In this case, the vulnerability allows for object injection, which can lead to remote code execution, privilege escalation, or other severe impacts on the confidentiality, integrity, and availability of the affected system. The CVSS v3.1 score of 9.8 indicates a critical severity level, with an attack vector that is network-based (AV:N), requiring no privileges (PR:N) and no user interaction (UI:N), and affecting confidentiality, integrity, and availability to a high degree (C:H/I:H/A:H). This means an attacker can exploit this vulnerability remotely without authentication or user interaction, making it highly dangerous. The vulnerability is present in the theme's handling of serialized data, which is common in WordPress themes and plugins for storing complex data structures. Improper validation or sanitization of this serialized data allows attackers to craft malicious payloads that, when deserialized by the theme, execute arbitrary code or manipulate application logic. Although no known exploits are currently reported in the wild, the critical nature and ease of exploitation make it a significant threat. No official patches or updates have been linked yet, which increases the urgency for mitigation.
Potential Impact
For European organizations using WordPress websites with the FLAP Business theme, this vulnerability poses a severe risk. Exploitation could lead to complete compromise of the affected web server, allowing attackers to steal sensitive data, deface websites, distribute malware, or use the compromised server as a pivot point for further attacks within the network. Given the critical CVSS score and the lack of required authentication, attackers can easily target vulnerable sites en masse. This is particularly concerning for businesses relying on their online presence for customer engagement, e-commerce, or internal communications. The impact extends beyond data breaches to potential service outages and reputational damage. Additionally, organizations subject to GDPR and other data protection regulations face legal and financial consequences if personal data is compromised due to this vulnerability. The absence of known exploits in the wild currently provides a window for proactive defense, but the risk of imminent exploitation remains high due to the vulnerability's characteristics.
Mitigation Recommendations
1. Immediate action should be to identify all WordPress installations using the FLAP - Business theme, especially versions up to 1.5. 2. Since no official patch is currently available, organizations should consider temporarily disabling or replacing the theme with a secure alternative to prevent exploitation. 3. Implement Web Application Firewalls (WAFs) with custom rules to detect and block suspicious serialized data payloads targeting the theme's endpoints. 4. Conduct thorough code reviews and audits of the theme's deserialization routines to identify and remediate unsafe deserialization practices. 5. Monitor web server logs for unusual activity indicative of exploitation attempts, such as unexpected POST requests containing serialized data. 6. Harden the hosting environment by restricting PHP functions that enable code execution (e.g., disable eval, system calls) where feasible. 7. Prepare for rapid deployment of patches once released by the vendor or community. 8. Educate web administrators on the risks of deserialization vulnerabilities and the importance of timely updates and backups. 9. Regularly back up website data and configurations to enable quick recovery in case of compromise.
Affected Countries
Germany, United Kingdom, France, Netherlands, Italy, Spain, Poland, Sweden
CVE-2025-31396: CWE-502 Deserialization of Untrusted Data in themeton FLAP - Business WordPress Theme
Description
Deserialization of Untrusted Data vulnerability in themeton FLAP - Business WordPress Theme allows Object Injection. This issue affects FLAP - Business WordPress Theme: from n/a through 1.5.
AI-Powered Analysis
Technical Analysis
CVE-2025-31396 is a critical security vulnerability classified under CWE-502, which pertains to the deserialization of untrusted data. This vulnerability affects the FLAP - Business WordPress Theme developed by themeton, specifically versions up to 1.5. Deserialization vulnerabilities occur when untrusted input is processed by an application to reconstruct objects, potentially allowing attackers to inject malicious objects. In this case, the vulnerability allows for object injection, which can lead to remote code execution, privilege escalation, or other severe impacts on the confidentiality, integrity, and availability of the affected system. The CVSS v3.1 score of 9.8 indicates a critical severity level, with an attack vector that is network-based (AV:N), requiring no privileges (PR:N) and no user interaction (UI:N), and affecting confidentiality, integrity, and availability to a high degree (C:H/I:H/A:H). This means an attacker can exploit this vulnerability remotely without authentication or user interaction, making it highly dangerous. The vulnerability is present in the theme's handling of serialized data, which is common in WordPress themes and plugins for storing complex data structures. Improper validation or sanitization of this serialized data allows attackers to craft malicious payloads that, when deserialized by the theme, execute arbitrary code or manipulate application logic. Although no known exploits are currently reported in the wild, the critical nature and ease of exploitation make it a significant threat. No official patches or updates have been linked yet, which increases the urgency for mitigation.
Potential Impact
For European organizations using WordPress websites with the FLAP Business theme, this vulnerability poses a severe risk. Exploitation could lead to complete compromise of the affected web server, allowing attackers to steal sensitive data, deface websites, distribute malware, or use the compromised server as a pivot point for further attacks within the network. Given the critical CVSS score and the lack of required authentication, attackers can easily target vulnerable sites en masse. This is particularly concerning for businesses relying on their online presence for customer engagement, e-commerce, or internal communications. The impact extends beyond data breaches to potential service outages and reputational damage. Additionally, organizations subject to GDPR and other data protection regulations face legal and financial consequences if personal data is compromised due to this vulnerability. The absence of known exploits in the wild currently provides a window for proactive defense, but the risk of imminent exploitation remains high due to the vulnerability's characteristics.
Mitigation Recommendations
1. Immediate action should be to identify all WordPress installations using the FLAP - Business theme, especially versions up to 1.5. 2. Since no official patch is currently available, organizations should consider temporarily disabling or replacing the theme with a secure alternative to prevent exploitation. 3. Implement Web Application Firewalls (WAFs) with custom rules to detect and block suspicious serialized data payloads targeting the theme's endpoints. 4. Conduct thorough code reviews and audits of the theme's deserialization routines to identify and remediate unsafe deserialization practices. 5. Monitor web server logs for unusual activity indicative of exploitation attempts, such as unexpected POST requests containing serialized data. 6. Harden the hosting environment by restricting PHP functions that enable code execution (e.g., disable eval, system calls) where feasible. 7. Prepare for rapid deployment of patches once released by the vendor or community. 8. Educate web administrators on the risks of deserialization vulnerabilities and the importance of timely updates and backups. 9. Regularly back up website data and configurations to enable quick recovery in case of compromise.
Affected Countries
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Technical Details
- Data Version
- 5.1
- Assigner Short Name
- Patchstack
- Date Reserved
- 2025-03-28T10:59:36.420Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 68487f5c1b0bd07c3938cd1d
Added to database: 6/10/2025, 6:54:20 PM
Last enriched: 7/10/2025, 10:03:53 PM
Last updated: 7/10/2025, 10:03:53 PM
Views: 6
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