CVE-2026-22402 in Triply Plugin
Summary
by MITRE • 01/22/2026
Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in pavothemes Triply triply allows PHP Local File Inclusion.This issue affects Triply: from n/a through <= 2.4.7.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 01/28/2026
The CVE-2026-22402 vulnerability represents a critical PHP Remote File Inclusion flaw in the pavothemes Triply theme, classified under CWE-98 as improper control of filename for include/require statements. This vulnerability allows attackers to exploit the theme's handling of file inclusion parameters, creating a pathway for malicious code execution through local file inclusion attacks. The flaw specifically manifests when the theme processes user-supplied input in include/require statements without adequate sanitization or validation, enabling remote attackers to manipulate the file inclusion mechanism.
The technical exploitation of this vulnerability occurs through manipulation of parameters that control file inclusion within the Triply theme's PHP code execution flow. Attackers can leverage this weakness by crafting malicious input that gets directly processed in include/require statements, potentially allowing them to execute arbitrary PHP code on the target server. The vulnerability affects all versions of the Triply theme from the initial release through version 2.4.7, indicating a long-standing issue that has not been properly addressed. This flaw falls under the ATT&CK technique T1505.003 for PHP Remote File Inclusion, which is categorized as a privilege escalation and code execution vector within the adversary's attack chain.
The operational impact of this vulnerability extends beyond simple code execution to encompass complete system compromise and data exfiltration capabilities. Successful exploitation allows attackers to gain unauthorized access to the web server, potentially leading to full system compromise, data theft, and persistent backdoor installation. The vulnerability's presence in the theme's core functionality means that any website utilizing affected versions of Triply becomes immediately susceptible to attack. Organizations running vulnerable installations face significant risk of unauthorized access, content manipulation, and potential use as a launchpad for further attacks within their network infrastructure.
Security mitigations for CVE-2026-22402 require immediate remediation through version updates to Triply theme versions that address the file inclusion vulnerability. System administrators should implement input validation and sanitization measures to prevent malicious filenames from reaching include/require statements, while also ensuring that the web server configuration restricts access to sensitive files. The mitigation strategy should include disabling remote file inclusion in PHP configuration, implementing proper parameter validation, and applying the latest theme updates from pavothemes. Additionally, network monitoring should be enhanced to detect suspicious file inclusion patterns, and regular security audits should verify that no unauthorized modifications have been made to the vulnerable theme components. This vulnerability demonstrates the critical importance of maintaining up-to-date third-party components and implementing proper input validation controls as recommended in OWASP Top 10 and NIST cybersecurity frameworks.