CVE-2026-43574 in OpenClaw
Summary
by MITRE • 05/05/2026
OpenClaw before 2026.4.12 contains an improper authorization vulnerability in helper-backed channels where empty resolved approver lists are interpreted as explicit approval authorization. Attackers can resolve pending approvals without proper authorization by exploiting this logic flaw if they know an approval id.
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Analysis
by VulDB Data Team • 05/09/2026
The OpenClaw vulnerability represents a critical authorization flaw that undermines the security model of helper-backed channels within the system. This issue affects versions prior to 2026.4.12 and stems from a fundamental misinterpretation of approval states where empty resolved approver lists are incorrectly treated as explicit authorization. The vulnerability creates a logical gap in the authorization process that directly conflicts with established security principles and access control mechanisms.
The technical flaw manifests when the system processes approval requests and encounters resolved approver lists that contain no entries. Under normal circumstances, such empty lists should trigger a rejection or require additional verification steps, but instead the system interprets these empty lists as valid approvals. This misinterpretation occurs within the core authorization logic that handles helper-backed channels, where the system fails to properly validate that approvers have actually provided their consent before granting access or executing the requested action.
Attackers can exploit this vulnerability by leveraging knowledge of specific approval IDs to manipulate the authorization flow. The attack requires minimal information - simply knowing an approval ID allows malicious actors to bypass the intended authorization checks. This creates a significant risk where unauthorized individuals can resolve pending approvals without proper authentication or authorization, effectively granting themselves access to resources or actions that should require explicit approval from authorized personnel. The vulnerability demonstrates poor input validation and authorization logic implementation that violates fundamental security design principles.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it compromises the integrity of the entire approval workflow system. When attackers can manipulate approval states without proper authorization, they can potentially bypass critical security controls and access sensitive data or perform privileged operations. This flaw undermines the trust model of the system and creates opportunities for privilege escalation, data exfiltration, and other malicious activities. The vulnerability particularly affects environments where helper-backed channels are used for critical access controls and administrative functions.
This vulnerability maps directly to CWE-863, which addresses "Incorrect Authorization," and aligns with ATT&CK technique T1078 for valid accounts and T1531 for credential stuffing, though the specific vector here involves authorization bypass through logical flaws. The improper handling of empty approver lists represents a classic case of insufficient authorization checking and demonstrates the importance of proper input validation in security-critical systems. Organizations should immediately implement the vendor-provided patch for version 2026.4.12 and conduct thorough reviews of their approval workflows to ensure similar logic flaws are not present in other components of their systems.
The remediation approach requires strengthening the authorization logic to properly validate that approver lists contain actual entries before granting authorization. Systems should implement explicit checks that reject empty approver lists and require proper authorization from designated approvers. Additional measures include logging all approval resolution attempts, implementing rate limiting on approval operations, and ensuring that approval IDs cannot be used without proper authentication. Organizations should also consider implementing additional authorization layers and monitoring for suspicious approval patterns that might indicate exploitation attempts.