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CVE PROGRAM SOURCE RECORD8.8 High

CVE-2026-61435

PraisonAI before 4.6.78 Authentication Bypass via Host Header Spoofing

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

MervinPraison PraisonAI

Default version status: unaffected

  • 0 to < 4.6.78affected
  • 4.6.78unaffected
pkg:pypi/praisonai

References