CVE-2025-5804 is classified as a high-severity vulnerability due to its CVSS score of 7.5. This vulnerability allows improper control of filename for include/require statements in PHP programs, specifically within the Case Themes Case Theme User plugin. The flaw is known as 'PHP Remote File Inclusion' and enables attackers to perform PHP Local File Inclusion (LFI).
The potential impact of this vulnerability includes unauthorized access to sensitive files and systems, leading to a breach of confidentiality, integrity, and availability. The attack vector is network-based, and the attack complexity is high, meaning that it requires user interaction to exploit.
Organizations utilizing the affected plugin versions should prioritize patching immediately to mitigate risks. The vulnerability affects Case Theme User versions below 1.0.4, with the last modification date noted as April 24, 2026.
Currently, there are no publicly confirmed exploits available, but the potential for exploitation remains a significant concern due to the nature of the vulnerability. Organizations must remain vigilant and ensure they apply necessary updates to protect against potential attacks.
Vulnerability Details
The CVE-2025-5804 vulnerability arises from improper control of filename in PHP include/require statements. The vulnerability description indicates that it specifically affects the Case Themes Case Theme User plugin, allowing PHP Local File Inclusion, which can lead to unauthorized file access.
The CVSS score of 7.5 categorizes this vulnerability as high severity. The attack vector is network-based, and it requires user interaction, indicating that while it is exploitable, it may not be straightforward. The impacts on confidentiality, integrity, and availability are rated as high.
The vulnerability was published on April 10, 2026, and has been classified under CWE-98, which pertains to improper control of filenames or paths.
Technical Analysis
The root cause of CVE-2025-5804 lies in the way the plugin handles file inclusion. Poor validation of user inputs allows attackers to manipulate the filename parameter, leading to PHP Local File Inclusion. This can be exploited over the network, and due to high attack complexity, it requires user interaction to trigger the vulnerability.
The attack requires no specific privileges, making it accessible to any potential attacker with network access. User interaction may be needed to initiate the exploit, such as tricking the user into visiting a malicious link.
The impacts on confidentiality, integrity, and availability are all rated high, indicating that successful exploitation could lead to unauthorized access to sensitive data, modifications to files, and potential disruptions of service.
Risk & Impact Analysis
Risk to organizations includes the possibility of attackers gaining unauthorized access to sensitive data, leading to potential data breaches, loss of integrity, and service disruptions. The high CVSS score indicates that this vulnerability poses a significant risk, particularly for organizations using the affected plugin versions.
The blast radius of this vulnerability is considerable, as it can affect all instances of the Case Themes Case Theme User plugin that are not updated. The urgency assessment based on the CVSS score denotes that organizations should prioritize patching immediately.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects all versions of the Case Theme User plugin prior to version 1.0.4. Organizations should ensure they update to the latest version to mitigate this risk.
Mitigation & Remediation
Organizations should patch the Case Themes Case Theme User plugin to version 1.0.4 or later as soon as possible. If immediate patching is not feasible, consider implementing configuration hardening measures to limit file inclusion capabilities.
Monitoring for unusual access patterns and implementing network controls can also help mitigate the risks associated with this vulnerability. To validate the effectiveness of remediation, organizations should utilize continuous penetration testing to identify any residual weaknesses.
Detection Guidance
Organizations should monitor logs for any indicators of unauthorized file access attempts and analyze behavioral anomalies that could indicate exploitation attempts. Additionally, network signatures related to PHP include/require calls should be reviewed for unusual patterns.
AppSecure Threat Intelligence Insight
CVE-2025-5804 highlights the importance of proper input validation in PHP applications. The potential for PHP Local File Inclusion attacks remains a critical concern, particularly as more organizations adopt PHP-based systems.
Security teams should consider developing robust input validation strategies and regularly review their security posture to defend against such vulnerabilities. For further insights, refer to the penetration testing methodology and best practices for securing PHP applications.
In conclusion, organizations must prioritize timely updates and proactive security measures to mitigate vulnerabilities such as CVE-2025-5804. Understanding and addressing these risks is essential for maintaining a secure operational environment.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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