CVE-2026-61435 Details
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.
A vulnerability allowing authentication bypass has been identified in PraisonAI versions prior to 4.6.78. This issue arises in the Call API agent invocation endpoints when the PRAISONAI_CALL_AUTH environment variable is set to 'disabled'. The vulnerability is rooted in the improper handling of the HTTP Host header, which can be manipulated by a remote, unauthenticated attacker to bypass authentication and access restricted functionalities.
Users can update to PraisonAI version 4.6.78 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 15, 2026CISA-ADP
Assessed Jul 15, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-2gpf-2492-q9jh | CISA-ADP | AdvisoryBundleRemedyVendor |
| https://github.com/MervinPraison/PraisonAI/commit/2a855c470077c7d2e2479a575f7ef7f548d51c33 | [email protected] | Source CodeVendor |
| https://github.com/MervinPraison/PraisonAI/commit/846568c7a5d8ce9e71e56e4c213f027c04909753 | [email protected] | Source CodeVendor |
| https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-2gpf-2492-q9jh | [email protected] | AdvisoryBundleRemedyVendor |
| https://www.vulncheck.com/advisories/praisonai-before-authentication-bypass-via-host-header-spoofing | [email protected] | AdvisoryBundle |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-287 | Improper Authentication | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| PraisonAI | <= 4.6.77 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 15, 2026 | CVE Modified | CISA-ADP |
| Jul 15, 2026 | New CVE Received | [email protected] |