CVE-2026-69118 in Cachet
Summary
by MITRE • 08/10/2026
Cachet through 2.4.1 contains a server-side template injection vulnerability in incident template rendering that allows authenticated users to execute arbitrary PHP code. Attackers can create malicious incident templates with Blade directives or Twig filters that execute system commands when incidents are created, achieving remote code execution as the web server process.
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Analysis
by VulDB Data Team • 08/10/2026
This vulnerability exists within the Cachet monitoring platform version 2.4.1 and earlier, representing a critical server-side template injection flaw that enables authenticated attackers to achieve remote code execution. The vulnerability stems from insufficient input validation and sanitization during incident template rendering processes, where user-supplied data is directly incorporated into template processing without proper escaping or filtering mechanisms. The flaw specifically manifests when the application processes incident templates containing malicious Blade directives or Twig filters that are interpreted by the underlying templating engine, allowing attackers to execute arbitrary PHP code with the privileges of the web server process.
The technical implementation of this vulnerability leverages the templating system's trust in user-provided content, where authenticated users can craft incident templates containing malicious code that gets executed during template rendering. This occurs because the application fails to properly sanitize or escape template variables before processing them through the templating engine, creating an injection vector that bypasses normal security controls. The vulnerability is particularly dangerous as it requires only authentication access to the platform, making it exploitable by users with legitimate access rights who can then escalate their privileges to system-level execution. Attackers can utilize this flaw to execute system commands, access sensitive data, establish persistence mechanisms, or compromise the entire web server infrastructure.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with complete control over the affected web server and its resources. Successful exploitation can lead to data breaches, service disruption, lateral movement within the network, and potential compromise of additional systems that rely on the compromised monitoring platform. The vulnerability affects organizations that depend on Cachet for system monitoring and incident management, potentially exposing critical infrastructure to unauthorized access and manipulation. Organizations using vulnerable versions of Cachet face significant risk of unauthorized code execution, data exfiltration, and service availability attacks, particularly in environments where monitoring systems have elevated privileges or access to sensitive operational data.
Mitigation strategies should prioritize immediate patching of the affected Cachet versions to address the template injection vulnerability through proper input validation and sanitization mechanisms. Organizations must implement strict template validation controls that prevent the execution of arbitrary code within user-provided templates, including disabling potentially dangerous templating features and enforcing comprehensive escaping of user inputs. Additional security measures should include restricting template creation privileges to trusted administrators only, implementing web application firewalls to detect and block malicious template content, and conducting regular security assessments of templating systems. The vulnerability aligns with CWE-94 (Improper Control of Generation of Code) and represents a significant risk under ATT&CK technique T1059.007 (Command and Scripting Interpreter: PowerShell), as it enables attackers to execute system commands through the web application interface, potentially allowing for further privilege escalation and lateral movement within the compromised environment.
This vulnerability type demonstrates the critical importance of secure template processing in web applications and highlights the need for comprehensive input validation controls that prevent code injection attacks. The flaw represents a fundamental breakdown in the principle of least privilege and proper security boundaries within the application's template rendering system, creating an attack surface that can be exploited by authenticated users to achieve system-level compromise. Organizations should implement robust monitoring and logging of template creation activities to detect potential exploitation attempts and maintain up-to-date security patches to prevent similar vulnerabilities from being exploited in their infrastructure.