{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "4.6.78"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "393de394087e3badc79acfec490323bcc99638bd"
            },
            {
              "fixed": "2a855c470077c7d2e2479a575f7ef7f548d51c33"
            },
            {
              "fixed": "846568c7a5d8ce9e71e56e4c213f027c04909753"
            }
          ],
          "repo": "https://github.com/mervinpraison/praisonai",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-2gpf-2492-q9jh"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-287"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61435.json"
  },
  "details": "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.",
  "id": "CVE-2026-61435",
  "modified": "2026-07-17T03:41:47.963567312Z",
  "published": "2026-07-15T11:25:39.670Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61435.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-2gpf-2492-q9jh"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-61435"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/praisonai-before-authentication-bypass-via-host-header-spoofing"
    },
    {
      "type": "FIX",
      "url": "https://github.com/MervinPraison/PraisonAI/commit/2a855c470077c7d2e2479a575f7ef7f548d51c33"
    },
    {
      "type": "FIX",
      "url": "https://github.com/MervinPraison/PraisonAI/commit/846568c7a5d8ce9e71e56e4c213f027c04909753"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "PraisonAI before 4.6.78 Authentication Bypass via Host Header Spoofing"
}