{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "5.9.9"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "46b88a3c81198b99c21abaa7888fefac0eec6c69"
            }
          ],
          "repo": "https://github.com/calcom/cal.diy",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-94"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/71xxx/CVE-2025-71389.json"
  },
  "details": "Cal.com (calcom/cal.diy) before 5.9.9 is vulnerable to unauthenticated remote code execution because it bundles a version of Next.js whose React Server Components (RSC) request handling deserializes attacker-controlled input. A remote attacker can send a crafted RSC request to the server and cause arbitrary code to be executed during server-side processing, without authentication or user interaction. The flaw derives from the upstream Next.js vulnerability CVE-2025-55182 and is resolved in 5.9.9 by updating the affected dependency.",
  "id": "CVE-2025-71389",
  "modified": "2026-07-25T03:56:37.503061759Z",
  "published": "2026-07-23T21:16:44.870Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/71xxx/CVE-2025-71389.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-9qr9-h5gf-34mp"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/calcom/cal.diy/security/advisories/GHSA-qjx2-5xqp-cpf4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-71389"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/cal-com-before-remote-code-execution-via-rsc"
    },
    {
      "type": "FIX",
      "url": "https://github.com/calcom/cal.diy/pull/25592"
    }
  ],
  "related": [
    "GHSA-9qr9-h5gf-34mp",
    "GHSA-qjx2-5xqp-cpf4"
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Cal.com before 5.9.9 Remote Code Execution via RSC"
}