CVE-2026-32017 in OpenClaw
Summary
by MITRE • 03/20/2026
OpenClaw versions prior to 2026.2.19 contain an allowlist bypass vulnerability in the exec safeBins policy that allows attackers to write arbitrary files using short-option payloads. Attackers can bypass argument validation by attaching short options like -o to whitelisted binaries, enabling unauthorized file-write operations that should be denied by safeBins checks.
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Analysis
by VulDB Data Team • 03/26/2026
The vulnerability identified as CVE-2026-32017 represents a critical security flaw in OpenClaw versions prior to 2026.2.19 that directly undermines the system's exec safeBins policy implementation. This weakness operates as an allowlist bypass mechanism that fundamentally compromises the intended security controls designed to prevent unauthorized file operations. The vulnerability specifically targets the validation logic that should restrict file writing capabilities when executing commands through whitelisted binaries. The flaw manifests when attackers exploit short-option payloads that can be appended to legitimate commands, effectively circumventing the normal argument validation processes that should maintain system integrity.
The technical implementation of this vulnerability stems from insufficient input sanitization within the safeBins policy enforcement mechanism. When legitimate binaries are executed with short options such as -o, the system's validation logic fails to properly inspect the complete command structure, allowing malicious payloads to slip through undetected. This bypass occurs because the system's argument parsing does not adequately account for the potential manipulation of command arguments through short-form options that are typically considered safe. The vulnerability operates at the intersection of command execution and privilege management, where the expected security boundaries are violated through clever exploitation of option parsing behavior. The flaw specifically affects the exec safeBins policy which is designed to prevent arbitrary file creation and modification by restricting which commands can be executed with elevated privileges.
From an operational standpoint, this vulnerability creates significant risk for systems running affected OpenClaw versions as it enables attackers to perform unauthorized file-write operations that should be strictly prohibited. The ability to bypass safeBins checks through short-option payloads means that attackers can potentially create, modify, or delete files in locations where such operations would normally be denied. This capability can be leveraged for persistent access, privilege escalation, or data exfiltration attacks, depending on the target system configuration and the attacker's objectives. The vulnerability's impact is amplified by the fact that it operates silently within normal system operations, making detection difficult and potentially allowing attackers to maintain access undetected. The bypass mechanism is particularly dangerous because it requires minimal effort to exploit and can be automated, making it attractive to threat actors seeking to compromise systems without raising immediate alarms.
The security implications of this vulnerability align with CWE-250, which addresses "Execution of Code with Unintended Privileges" and specifically relates to the improper handling of command-line arguments in privilege escalation scenarios. From the ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation through command injection and execution policy bypasses, particularly T1068 which covers "Exploitation for Privilege Escalation." Organizations should consider implementing immediate mitigations including updating to OpenClaw version 2026.2.19 or later, which contains the necessary patches to address the argument validation bypass. Additional defensive measures may include enhanced monitoring of file system operations, implementation of more robust input validation at the command execution level, and regular security assessments of system policies to identify similar bypass opportunities. The vulnerability underscores the importance of comprehensive testing of security controls, particularly those involving argument validation and privilege management, to ensure that security boundaries are properly maintained against sophisticated attack vectors.