{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "fixed": "0.27.0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              },
              {
                "range": [
                  {
                    "fixed": "04f239a2fc74f7090c779a6a7b8a08238fd31b88"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "original_tag": "v0.27.0",
                "range": [
                  {
                    "fixed": "1fd6a2a385175399fb515d50d44bee4cda30b40c"
                  }
                ],
                "source": "REFERENCES_TAG"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1fd6a2a385175399fb515d50d44bee4cda30b40c"
            },
            {
              "fixed": "04f239a2fc74f7090c779a6a7b8a08238fd31b88"
            }
          ],
          "repo": "https://github.com/usememos/memos",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/113xxx/CVE-2026-113601.json"
  },
  "details": "Memos before 0.27.0 contains a missing authorization vulnerability in the ActivityService ListActivities and GetActivity API methods that allows authenticated users to view all users' activity records. Low-privileged attackers can enumerate sequential activity IDs to obtain creator IDs, timestamps, and memo-comment references, including activity on other users' private memos.",
  "id": "CVE-2026-113601",
  "modified": "2026-10-23T10:30:44.211657703Z",
  "published": "2026-10-20T15:40:28.941Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/113xxx/CVE-2026-113601.json"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/usememos/memos"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/usememos/memos/blob/v0.26.2/server/router/api/v1/activity_service.go"
    },
    {
      "type": "FIX",
      "url": "https://github.com/usememos/memos/commit/04f239a2fc74f7090c779a6a7b8a08238fd31b88"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/usememos/memos/issues/5651"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/usememos/memos/releases/tag/v0.27.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-113601"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/memos-before-0.27.0-missing-authorization-via-activityservice-listactivities-getactivity"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Memos before 0.27.0 Missing Authorization via ActivityService ListActivities/GetActivity"
}