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CVE-2026-61435PYSEC-2026-4247GHSA-2GPF-2492-Q9JH

PraisonAI before 4.6.78 Authentication Bypass via Host Header Spoofing

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 4.6.78
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: poc
  • Automatable: yes
  • Technical impact: partial

Summary

PraisonAI before 4.6.78 contains an authentication bypass in the Call API agent invocation endpoints (src/praisonai/praisonai/api/agent_invoke.py) when PRAISONAI_CALL_AUTH=disabled is configured. The safeguard intended to restrict the disabled-auth opt-out to localhost binding derives the bind host from request.url.hostname, which is taken from the client-controlled HTTP Host header. A remote, unauthenticated attacker who can reach the service over the network can send a spoofed 'Host: 127.0.0.1' header to bypass the localhost-only restriction and list (GET /api/v1/agents) and invoke (POST /api/v1/agents/{agent_id}/invoke) registered agents without authentication.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: poc · Automatable: yes · Technical impact: partial

  3. Record last updated

Affected versions

  • MervinPraison PraisonAI

    fixed in 4.6.78

  • praisonaiPyPI

    fixed in 4.6.78

References 4

GitHub · MervinPraison/PraisonAI

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