Approval-token workflow attack bypasses checks on tool-using agents
Original title: When Approval Becomes Execution: Authorization-Grounded Workflow Attacks on Tool-Using Agents
In local OpenClaw reruns, the original configuration completed the target operation in 8 of 9 cases.
Researchers describe an authorization-grounded workflow attack studied in the OpenClaw Agent Security Attack Competition, a controlled benchmark derived from SeClaw-style tasks. After a protected document request is denied, the agent obtains a normal approval token and supplies it to the document service through authorized_by. Official traces succeeded on three Enterprise OA document targets. In 23 local validation experiments, the original configuration reached the token transition in 9 of 9 reruns and completed the operation in 8 of 9.
Unconfirmed: Reported success comes from the authors' competition traces and controlled local reruns, not production incidents.
- The attack avoids explicit policy-override instructions.
- Single-component variants still succeeded on the three document targets.
- Authors say token possession was treated as sufficient authorization.
- Suggested defenses include context-bound tokens and service-side policy binding.
From the original article
1 min read at arxiv.orgTool-using language-model agents increasingly rely on local services for document access, approval management, and enterprise workflow execution. This paper studies an authorization-grounded workflow attack in the OpenClaw Agent Security Attack Competition, a controlled benchmark derived from SeClaw-style security task synthesis.
By Chenggong Shi · arxiv.org
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