CVE-2026-32063 in OpenClaw
Summary
by MITRE • 03/11/2026
OpenClaw version 2026.2.19-2 prior to 2026.2.21 contains a command injection vulnerability in systemd unit file generation where attacker-controlled environment values are not validated for CR/LF characters, allowing newline injection to break out of Environment= lines and inject arbitrary systemd directives. An attacker who can influence config.env.vars and trigger service install or restart can execute arbitrary commands with the privileges of the OpenClaw gateway service user.
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Analysis
by VulDB Data Team • 03/24/2026
The vulnerability identified as CVE-2026-32063 affects OpenClaw version 2026.2.19-2 and earlier releases, specifically targeting the systemd unit file generation process within the software. This flaw represents a critical command injection vulnerability that stems from inadequate input validation of environment variables during the service configuration generation phase. The vulnerability manifests when attacker-controlled values are processed without proper sanitization of carriage return and line feed characters, creating an opportunity for newline injection attacks that can compromise system integrity.
The technical implementation of this vulnerability occurs within the systemd unit file generation logic where environment variables are directly incorporated into the Environment= directive lines without proper validation of special characters. When CR/LF sequences are present in the config.env.vars configuration values, these characters can be interpreted by the systemd parser as line terminators, allowing an attacker to break out of the intended Environment= line and inject additional systemd directives. This behavior creates a path for arbitrary command execution within the context of the OpenClaw gateway service user privileges, which typically operate with elevated permissions to manage system services and configurations.
The operational impact of this vulnerability extends beyond simple command execution, as it enables attackers to manipulate the systemd service configuration in ways that could lead to persistent backdoors, privilege escalation, or service disruption. The attack vector requires an attacker to influence the config.env.vars configuration parameters and subsequently trigger either a service installation or restart operation, which would cause the vulnerable code path to execute. This requirement for a specific trigger mechanism limits the exploitability but does not eliminate the serious security implications, particularly in environments where configuration management is not properly secured or where attackers can influence service deployment processes.
This vulnerability aligns with CWE-74 and CWE-94 categories, specifically addressing weaknesses in external control of system processes and code injection flaws that allow arbitrary code execution. The attack pattern follows techniques described in the MITRE ATT&CK framework under T1059 for command and script execution, and potentially T1543 for execution through systemd services. The vulnerability demonstrates a classic example of insufficient input sanitization that allows attackers to manipulate system configuration files and execute malicious commands through legitimate system interfaces. Organizations should immediately implement the recommended remediation measures including updating to version 2026.2.21 or later, implementing proper input validation for environment variables, and monitoring for unauthorized configuration changes that could indicate exploitation attempts.
The security implications of this vulnerability underscore the importance of validating all user-controlled inputs in system configuration processes, particularly when these inputs are used to generate system-level configuration files. The flaw highlights the need for robust input sanitization practices in service management frameworks and emphasizes that even seemingly benign configuration parameters can become attack vectors when not properly validated. Organizations should conduct comprehensive security assessments of their system configuration management processes and implement defense-in-depth strategies to prevent similar vulnerabilities from being introduced in future releases.