{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8f693a1f35d0a84bb69af78fb6925f74329ae4fe"
            }
          ],
          "repo": "https://github.com/opf/openproject",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-hh5p-gwf8-h245"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-367",
      "CWE-639"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40896.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "fixed": "17.3.0"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "OpenProject is open-source, web-based project management software. Prior to version 17.3.0, a user with `manage_agendas` permission in any project can inject agenda items into meetings belonging to any other project on the instance — even projects they have no access to. No knowledge of the target project, meeting, or victim is required; the attacker can blindly spray items into every meeting on the instance by iterating sequential section IDs. Version 17.3.0 patches the issue.",
  "id": "CVE-2026-40896",
  "modified": "2026-07-08T05:39:29.859659221Z",
  "published": "2026-04-20T15:12:52.279Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40896.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/opf/openproject/security/advisories/GHSA-hh5p-gwf8-h245"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40896"
    },
    {
      "type": "FIX",
      "url": "https://github.com/opf/openproject/commit/8f693a1f35d0a84bb69af78fb6925f74329ae4fe"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "OpenProject has Cross-Project Meeting Agenda Item Injection via Unscoped Section Lookup"
}