{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.5.2"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "016ccbe1c095a3eed7967737ac1d4df2754f5d96"
            },
            {
              "fixed": "2ee8f100b25c4d8c8c9b416c3175bb4be413a19c"
            }
          ],
          "repo": "https://github.com/oraios/serena",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-37h2-6p4f-mp3q"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-306",
      "CWE-352"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49471.json"
  },
  "details": "Serena is a powerful MCP toolkit for coding that provides semantic retrieval and editing capabilities. Prior to v1.5.2, Serena's built-in web dashboard exposes an unauthenticated Flask API on a fixed, predictable port, with no authentication, no CSRF protection, and no Host header validation. A DNS rebinding attack allows a malicious webpage to reach this API from any browser and write arbitrary content to the agent's persistent memory store, which the agent reads and acts on autonomously. Combined with execute_shell_command using shell=True, this creates a remote code execution chain requiring only that the victim visit a malicious webpage while Serena is running. This issue is fixed in version v1.5.2.",
  "id": "CVE-2026-49471",
  "modified": "2026-07-11T03:54:03.548761105Z",
  "published": "2026-07-07T20:50:50.545Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/oraios/serena/releases/tag/v1.5.2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49471.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/oraios/serena/security/advisories/GHSA-37h2-6p4f-mp3q"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-49471"
    },
    {
      "type": "FIX",
      "url": "https://github.com/oraios/serena/commit/016ccbe1c095a3eed7967737ac1d4df2754f5d96"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Serena: Unauthenticated Flask dashboard on fixed port enables DNS rebinding → memory poisoning → RCE"
}