{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "3.6.2"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "68898eeb914882a21797523f2782914795bc67ae"
            }
          ],
          "repo": "https://github.com/leantime/leantime",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-wv69-xr82-phr6"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-639"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66412.json"
  },
  "details": "Leantime 3.6.2 and prior contains a broken access control vulnerability that allows authenticated users to read milestone data from projects they are not assigned to by supplying arbitrary integer milestone IDs to the tickets.getMilestone JSON-RPC endpoint. Attackers can enumerate integer milestone IDs through the JSON-RPC API to access project planning information, milestone titles, descriptions, and timelines across all projects on the instance regardless of project membership.",
  "id": "CVE-2026-66412",
  "modified": "2026-08-12T03:51:10.410677891Z",
  "published": "2026-07-27T05:23:20.773Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66412.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/Leantime/leantime/security/advisories/GHSA-wv69-xr82-phr6"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-66412"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/leantime-all-versions-prior-to-and-broken-access-control-via-tickets-getmilestone-json-rpc"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/Leantime/leantime/pull/3657"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Leantime/leantime/commit/68898eeb914882a21797523f2782914795bc67ae"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Leantime all versions prior to and 3.6.2 Broken Access Control via tickets.getMilestone JSON-RPC"
}