Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/MervinPraison/PraisonAI/commit/2a855c470077c7d2e2479a575f7ef7
- https://github.com/MervinPraison/PraisonAI/commit/846568c7a5d8ce9e71e56e4c213f02
- https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-2gpf-2492-q9
- https://www.vulncheck.com/advisories/praisonai-before-authentication-bypass-via-
- https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-2gpf-2492-q9
FAQ
What is CVE-2026-61435?
CVE-2026-61435 is a vulnerability with a CVSS score of 8.2 (HIGH). 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 ...
How severe is CVE-2026-61435?
CVE-2026-61435 has been rated HIGH with a CVSS base score of 8.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-61435?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.