{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:praison:praisonai:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "4.5.115"
              },
              {
                "last_affected": "4.5.114"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "CPE_RANGE"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "ed3a689f8c78cbbbc525de15db868661e14af5d7"
            }
          ],
          "repo": "https://github.com/mervinpraison/praisonai",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-f292-66h9-fpmf"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-200"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39889.json"
  },
  "details": "PraisonAI is a multi-agent teams system. Prior to 4.5.115, the A2U (Agent-to-User) event stream server in PraisonAI exposes all agent activity without authentication. The create_a2u_routes() function registers the following endpoints with NO authentication checks: /a2u/info, /a2u/subscribe, /a2u/events/{stream_name}, /a2u/events/sub/{id}, and /a2u/health. This vulnerability is fixed in 4.5.115.",
  "id": "CVE-2026-39889",
  "modified": "2026-07-08T05:38:46.245077248Z",
  "published": "2026-04-08T20:44:24.276Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39889.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-f292-66h9-fpmf"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39889"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "PraisonAI has Unauthenticated SSE Event Stream Exposes All Agent Activity in A2U Server"
}