---
id: GHSA-gp65-m7q3-4vjw
title: >-
  Duplicate Advisory: PraisonAI: Call API localhost-only authentication bypass
  via spoofed Host header
summary: >-
  Duplicate Advisory: PraisonAI: Call API localhost-only authentication bypass
  via spoofed Host header
severity: high
cvss: 8.2
cwe:
  - CWE-287
vendor: praisonai
product: praisonai
ecosystem: pip
affected:
  - praisonai <= 4.6.77
published: '2026-07-15'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T19:36:15Z'
source: GHSA
sourceUrl: 'https://github.com/advisories/GHSA-gp65-m7q3-4vjw'
references:
  - url: >-
      https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-2gpf-2492-q9jh
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-61435'
  - url: >-
      https://github.com/MervinPraison/PraisonAI/commit/2a855c470077c7d2e2479a575f7ef7f548d51c33
  - url: >-
      https://github.com/MervinPraison/PraisonAI/commit/846568c7a5d8ce9e71e56e4c213f027c04909753
  - url: >-
      https://www.vulncheck.com/advisories/praisonai-before-authentication-bypass-via-host-header-spoofing
  - url: 'https://github.com/advisories/GHSA-gp65-m7q3-4vjw'
tags:
  - ghsa
  - pip
ingestedAt: '2026-10-08T20:06:22.195Z'
---

## Overview

### Duplicate Advisory
This advisory has been withdrawn because it is a duplicate of GHSA-2gpf-2492-q9jh. This link is maintained to preserve external references.

### Original 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 packages

- `praisonai <= 4.6.77`

## Remediation

Refer to the advisory for the patched release.