CVE-2026-28057: High Vulnerability in ThemeREX Mandala

The vulnerability identified as CVE-2026-28057 pertains to improper control of filename for include/require statements in the PHP program of the ThemeREX Mandala theme. This results in a PHP Local File Inclusion vulnerability, which can lead to unauthorized access and manipulation of files on the server. The issue primarily affects versions of Mandala from n/a through 2.8.

The CVSS score for this vulnerability is 8.1, categorizing it as high severity. This level of severity indicates a significant risk to organizations, particularly those relying on the vulnerable theme for their web applications. Immediate action is necessary to protect against potential exploitation, as attackers may leverage this vulnerability for unauthorized access.

Currently, there are no confirmed public exploits available for this vulnerability, which is a component of its appeal. However, the high severity score indicates that security teams should remain vigilant and prioritize patching to mitigate any risks associated with CVE-2026-28057.

Organizations should prioritize patching immediately to prevent unauthorized access and potential data breaches.

Vulnerability Details

CVE-2026-28057 is classified under CWE-98, which represents improper control of filename for include/require statements. The attack vector is classified as NETWORK, with a high attack complexity, meaning exploitation is not straightforward but possible under certain conditions. Additionally, no privileges are required to exploit this vulnerability, and user interaction is not necessary.

The confidentiality, integrity, and availability impacts are all rated as high, indicating that successful exploitation could allow an attacker to read sensitive files, modify data, or disrupt service availability.

Technical Analysis

The root cause of CVE-2026-28057 lies in how the ThemeREX Mandala theme handles file inclusion. Insecure coding practices allow attackers to manipulate the file path, leading to local file inclusion vulnerabilities. The attack vector is network-based, which means that an attacker can potentially exploit the vulnerability remotely.

Given the high complexity of the attack, exploitation may require specific conditions or configurations to be successful. However, the lack of required privileges and the absence of user interaction simplify the process for an attacker once the initial conditions are met.

Security teams should monitor their systems for any signs of exploitation related to this vulnerability, as it could lead to severe consequences if exploited.

Risk & Impact Analysis

Risk to organizations includes unauthorized access to sensitive data and potential disruption of services. The impact of exploiting this vulnerability can extend beyond the immediate environment, affecting customers and stakeholders.

Organizations utilizing ThemeREX Mandala must assess the potential blast radius if this vulnerability is exploited. Given the high severity score and potential for significant impact, it is imperative to act swiftly.

With an EPSS score of 0.00165, the risk percentile indicates a low probability of exploitation, but this does not negate the need for immediate remediation efforts.

Exploitation Status

Affected Versions

This vulnerability affects ThemeREX Mandala versions from n/a through 2.8. Organizations running these versions should take immediate action.

Mitigation & Remediation

Organizations should prioritize patching immediately to mitigate the risks associated with this vulnerability. Upgrade to the latest version of ThemeREX Mandala where this issue is resolved. If a patch is not available, consider implementing workarounds such as restricting file inclusion mechanisms and applying configuration hardening.

For further assistance, organizations may consider engaging in penetration testing to evaluate their security posture.

Detection Guidance

Security teams should monitor logs for unusual file access patterns and unexpected changes in file permissions. Behavioral anomalies associated with file inclusions should be investigated promptly. Additionally, implement network signatures to detect potential exploitation attempts.

AppSecure Threat Intelligence Insight

CVE-2026-28057 highlights the ongoing challenges associated with file inclusion vulnerabilities in web applications. Security teams must remain vigilant and proactive in identifying and mitigating such vulnerabilities. This incident serves as a reminder of the importance of secure coding practices.

For organizations looking to bolster their security measures, resources such as the penetration testing methodology guide can provide valuable insights.

Additionally, teams should explore options for vulnerability management programs to ensure a robust response framework is in place.

Lastly, the importance of continuous monitoring and assessments cannot be overstated. Organizations should consider implementing a continuous security testing strategy to keep their systems secured against emerging threats.