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CVE-2026-28089: High Vulnerability in ThemeREX Daiquiri

CVE-2026-28089 presents a high-severity vulnerability in the ThemeREX Daiquiri PHP program, allowing for local file inclusion. Immediate action is recommended to mitigate risks associated with this vulnerability.

HIGHCVSS 8.1 · Published March 5, 2026

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CVE-2026-28089 is classified as a high-severity vulnerability with a CVSS score of 8.1. This vulnerability allows improper control of the filename for include/require statements in PHP programs, specifically in the ThemeREX Daiquiri theme. Consequently, this can lead to PHP local file inclusion, which can severely compromise the application. The urgency for defenders is high, as any potential exploitation could lead to significant risks involving unauthorized access to sensitive files.

The vulnerability was published on March 5, 2026, and affects all versions of the Daiquiri theme up to and including 1.2.4. Organizations using this theme should take immediate action to assess their exposure and implement necessary mitigations.

Risk to organizations includes potential unauthorized access to sensitive information and system manipulation. Given the nature of this vulnerability, it is imperative that affected users prioritize patching and remediation efforts.

Currently, there are no known exploits available in public databases, but organizations should remain vigilant. The vulnerability is classified as deferred, which indicates that it may not yet have a confirmed mitigation.

Organizations should prioritize patching immediately.

Vulnerability Details

This vulnerability allows improper control of filename for include/require statements in PHP programs, leading to local file inclusion. The vulnerability affects the ThemeREX Daiquiri theme and has a CVSS score of 8.1, indicating high severity. The affected versions are from n/a through <= 1.2.4. The issue is categorized under CWE-98.

Technical Analysis

The root cause of CVE-2026-28089 stems from inadequate validation of the filename input within the PHP program. Attackers may leverage this vulnerability to include sensitive files from the server, enabling them to extract confidential information or potentially execute malicious code.

The attack vector for this vulnerability is network-based, meaning that an attacker can exploit it remotely without physical access to the system. The attack complexity is rated as high, as it may require specific conditions to be met for successful exploitation.

No user interaction is required for this attack, and it does not necessitate any privileges to be exploited. The confidentiality, integrity, and availability impacts are all rated as high, indicating a significant risk if the vulnerability is exploited.

Risk & Impact Analysis

The real-world deployment risk associated with this vulnerability is significant. Organizations utilizing the ThemeREX Daiquiri theme must recognize that the vulnerability could lead to unauthorized access to sensitive files, which in turn could facilitate further attacks on their systems.

This matters to organizations particularly due to the potential for data breaches and the subsequent reputational and financial damage that can occur. The blast radius is extensive, as the vulnerability could affect multiple systems if the theme is used broadly across an organization's environment.

Given the high CVSS score and the potential for exploitation, organizations should address this vulnerability in their priority patch cycle. The urgency for remediation is high, and organizations should not delay in implementing necessary patches.

Exploitation Status

Signal

Status

Known Exploit

No

Public PoC

No

Actively Exploited

No

Ransomware Use

No

Affected Versions

The vulnerability affects ThemeREX Daiquiri versions from n/a through <= 1.2.4. Organizations should ensure that they are using a patched version to mitigate the risks associated with this vulnerability.

Mitigation & Remediation

Organizations should prioritize patching immediately. It is crucial to update the ThemeREX Daiquiri to the latest version to eliminate this vulnerability. If a patch is not available, organizations should consider implementing workarounds such as restricting file inclusion capabilities or disabling the theme until a secure version is available.

Additionally, configuration hardening and network controls should be reviewed to minimize exposure. Continuous monitoring for any unusual behavior should be conducted to detect potential exploitation attempts.

Detection Guidance

Organizations should establish logging mechanisms to monitor for indicators of exploitation attempts. This includes tracking access to sensitive files and detecting any unauthorized file inclusion activities.

Behavioral anomalies, such as unusual access patterns or unexpected file changes, should also be closely monitored.

AppSecure Threat Intelligence Insight

The long-term significance of CVE-2026-28089 highlights the ongoing challenges in securing PHP applications. As vulnerabilities like this one emerge, it is crucial for security teams to remain proactive in identifying and addressing potential weaknesses in their applications.

This vulnerability represents a pattern of common misconfigurations that can lead to serious security risks. Organizations are encouraged to adopt a comprehensive security strategy that includes regular code reviews and vulnerability assessments.

For further guidance on securing PHP applications, organizations can refer to our secure coding practices guide. Ensuring that security is integrated into the development lifecycle is essential to mitigate similar vulnerabilities in the future.

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

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