{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "3.3.0"
              },
              {
                "last_affected": "3.3.0"
              },
              {
                "introduced": "3.3.1"
              },
              {
                "last_affected": "3.3.1"
              },
              {
                "introduced": "3.3.2"
              },
              {
                "last_affected": "3.3.2"
              },
              {
                "introduced": "3.3.3"
              },
              {
                "last_affected": "3.3.3"
              },
              {
                "introduced": "3.4.0"
              },
              {
                "last_affected": "3.4.0"
              },
              {
                "introduced": "3.4.1"
              },
              {
                "last_affected": "3.4.1"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "1d707ffb0f3599b3dcbda44a62bd4b40c61c2fde"
            },
            {
              "last_affected": "ba47aaad27503e88afc98819318e0771a79f8822"
            }
          ],
          "repo": "https://github.com/grimmory-tools/grimmory",
          "type": "GIT"
        }
      ],
      "versions": [
        "3.3.0",
        "3.3.1",
        "3.3.2",
        "3.3.3",
        "3.4.0",
        "3.4.1"
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulDB",
    "cwe_ids": [
      "CWE-285",
      "CWE-639"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93955.json"
  },
  "details": "A vulnerability was detected in grimmory-tools grimmory up to 3.3.3/3.4.1. Affected by this vulnerability is the function streamFileToResponse of the file backend/src/main/java/org/booklore/controller/KoboController.java of the component Download Endpoint. Performing a manipulation of the argument bookId results in authorization bypass. The attack may be initiated remotely. The exploit is now public and may be used. Issue #2431 is closed as completed, but its only comment states that the issue “has already been reported elsewhere.” No fixing commit or pull request is identified there.",
  "id": "CVE-2026-93955",
  "modified": "2026-09-23T03:30:51.454186897Z",
  "published": "2026-09-19T22:15:09.092Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/grimmory-tools/grimmory/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93955.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93955"
    },
    {
      "type": "ADVISORY",
      "url": "https://vuldb.com/cve/CVE-2026-93955"
    },
    {
      "type": "ADVISORY",
      "url": "https://vuldb.com/submit/943921"
    },
    {
      "type": "ADVISORY",
      "url": "https://vuldb.com/vuln/407914"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/grimmory-tools/grimmory/issues/2431"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/grimmory-tools/grimmory/issues/2431#issuecomment-5384402858"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/vuln/407914/cti"
    }
  ],
  "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/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": "grimmory-tools grimmory Download Endpoint KoboController.java streamFileToResponse authorization"
}