{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": [
              "cpe:2.3:a:checkmk:checkmk:2.5.0:-:*:*:*:*:*:*",
              "cpe:2.3:a:checkmk:checkmk:2.5.0:b1:*:*:*:*:*:*",
              "cpe:2.3:a:checkmk:checkmk:2.5.0:p1:*:*:*:*:*:*",
              "cpe:2.3:a:checkmk:checkmk:2.5.0:b2:*:*:*:*:*:*",
              "cpe:2.3:a:checkmk:checkmk:2.5.0:p2:*:*:*:*:*:*",
              "cpe:2.3:a:checkmk:checkmk:2.5.0:b3:*:*:*:*:*:*",
              "cpe:2.3:a:checkmk:checkmk:2.5.0:p3:*:*:*:*:*:*",
              "cpe:2.3:a:checkmk:checkmk:2.5.0:p4:*:*:*:*:*:*"
            ],
            "extracted_events": [
              {
                "introduced": "2.5.0-NA"
              },
              {
                "last_affected": "2.5.0-NA"
              },
              {
                "introduced": "2.5.0-b1"
              },
              {
                "last_affected": "2.5.0-b1"
              },
              {
                "introduced": "2.5.0-p1"
              },
              {
                "last_affected": "2.5.0-p1"
              },
              {
                "introduced": "2.5.0-b2"
              },
              {
                "last_affected": "2.5.0-b2"
              },
              {
                "introduced": "2.5.0-p2"
              },
              {
                "last_affected": "2.5.0-p2"
              },
              {
                "introduced": "2.5.0-b3"
              },
              {
                "last_affected": "2.5.0-b3"
              },
              {
                "introduced": "2.5.0-p3"
              },
              {
                "last_affected": "2.5.0-p3"
              },
              {
                "introduced": "2.5.0-p4"
              },
              {
                "last_affected": "2.5.0-p4"
              }
            ],
            "source": "CPE_STRING"
          },
          "events": [
            {
              "introduced": "a35953b1c7f874fabb2e68f519d4281b0d469a3f"
            },
            {
              "last_affected": "4488bab2392314ec74c09ecde1f09187dcedf2b3"
            }
          ],
          "repo": "https://github.com/checkmk/checkmk",
          "type": "GIT"
        }
      ],
      "versions": [
        "2.5.0-NA",
        "2.5.0-b1",
        "2.5.0-b2",
        "2.5.0-b3",
        "2.5.0-p4"
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Checkmk",
    "cwe_ids": [
      "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/7xxx/CVE-2026-7765.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "2.5.0"
          },
          {
            "fixed": "2.5.0p5"
          }
        ],
        "source": "AFFECTED_FIELD"
      },
      {
        "extracted_events": [
          {
            "introduced": "2.5.0"
          },
          {
            "fixed": "2.5.0p5"
          }
        ],
        "source": "CPE_FIELD"
      }
    ]
  },
  "details": "Incorrect authorization in the User Messages dashboard widget in Checkmk \u003c2.5.0p5 causes the message-fetching endpoints to return the dashboard creator's messages rather than the viewer's, allowing an attacker who knows a valid public dashboard share token to read the issuer's personal messages by sending requests to the underlying endpoint, even without a User Messages widget present.",
  "id": "CVE-2026-7765",
  "modified": "2026-07-08T05:38:58.095297893Z",
  "published": "2026-06-08T12:06:02.840Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://checkmk.com/werk/19815"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/7xxx/CVE-2026-7765.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-7765"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "User Messages widget leaked issuer messages on shared dashboards"
}