| Title | NousResearch hermes-agent 0.18.2 Denial of Service |
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| Description | Hermes Agent 0.18.2 has a denial of service vulnerability in the ACP prompt workflow. Additional prompts sent while a session is running are stored in an unbounded queue and later recursively executed as new agent turns.
An attacker with ACP client access can exhaust shared worker, model, and tool execution resources, causing other ACP prompts to become unavailable and potentially increasing provider/API costs. |
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| Source | ⚠️ https://github.com/hackerguopeng/cve/tree/main/Hermes_ACP_Queued_Prompt_DoS_Report |
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| User | hackerguopeng (UID 99623) |
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| Submission | 07/08/2026 10:58 (2 months ago) |
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| Moderation | 09/01/2026 17:48 (2 months later) |
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| Status | Accepted |
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| VulDB entry | 397719 [NousResearch hermes-agent up to 0.18.2 ACP Prompt Workflow acp_adapter/session.py HermesACPAgent.prompt denial of service] |
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| Points | 19 |
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