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CVE-2026-57131 – Unauthenticated RCE / Auth Bypass – PraisonAI Jobs API (< 4.6.58)

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Summary

CVE-2026-57131 is a critical missing-authentication vulnerability in PraisonAI, an open-source multi-agent orchestration framework. Prior to version 4.6.58, the framework’s asynchronous Jobs API is mounted at /api/v1/runs without any authentication or authorization checks, allowing any network-reachable client to submit and execute arbitrary agent jobs, read other users’ job results, and cancel or delete jobs system-wide. The issue carries a CVSS v3.1 base score of 9.8 (Critical).

Technical details

  • Root cause: praisonai.jobs.server.create_app mounts the router built by praisonai.jobs.router.create_router under /api/v1/runs without registering any authentication middleware, router-level dependency, or per-route/per-job ownership check.
  • Trigger conditions: The vulnerability is exploitable whenever the PraisonAI Jobs API service is reachable over the network — e.g., bound to a non-loopback interface, published via a container port mapping, placed behind a reverse proxy, or exposed through a tunneling service.
  • Attack vector: Network (AV:N), no privileges or user interaction required. An unauthenticated attacker can issue plain HTTP requests to the exposed endpoints.
  • Impact:
    • POST /api/v1/runs — submit attacker-controlled prompts and agent/tool configuration for execution under the operator’s service credentials, enabling code execution and abuse of any connected tools or API keys (CWE-94).
    • GET /api/v1/runs and GET /api/v1/runs/{job_id} — enumerate and read all jobs in the shared store, exposing other users’ prompts, agent reasoning, tool inputs/outputs, and retrieved data (information disclosure).
    • GET /api/v1/runs/{job_id}/stream — passively monitor live output of any in-flight job via server-sent events.
    • DELETE/cancel endpoints — terminate or delete arbitrary jobs belonging to other users, resulting in denial of service.
  • Related weaknesses: CWE-306 (Missing Authentication for Critical Function), CWE-862 (Missing Authorization), CWE-94 (Code Injection).

Affected software

  • Product: PraisonAI (PyPI package praisonai), maintained by MervinPraison
  • Affected versions: All releases prior to 4.6.58 that include the FastAPI-based Jobs API (praisonai/jobs/server.py, praisonai/jobs/router.py)
  • Fixed version: 4.6.58 and later

Severity

  • CVSS v3.1 Base Score: 9.8 (Critical)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: Upgrade PraisonAI to version 4.6.58 or later, which introduces authentication enforcement for the Jobs API.
  • Configuration: After upgrading, explicitly enable and configure the Jobs API authentication token/environment variable so that requests to /api/v1/runs require a valid credential rather than relying on default settings.
  • If immediate patching is not possible:
    • Do not expose the PraisonAI Jobs API service on a public or otherwise untrusted network interface; keep it bound to localhost or an internal-only network segment.
    • Place the service behind a reverse proxy or API gateway that enforces authentication/authorization before requests reach /api/v1/runs.
    • Restrict inbound access with firewall rules or network ACLs limiting connectivity to trusted operator hosts only.
    • Monitor for unexpected job submissions, unfamiliar prompts/agent configurations, or unusual job enumeration/cancellation activity as indicators of exploitation attempts.

References

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