{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:bookstackapp:bookstack:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "0.30.5"
              }
            ],
            "source": [
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "eecc08eddec4c7d58aeeae8ef806b2a852c803e3"
            }
          ],
          "repo": "https://github.com/bookstackapp/bookstack",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-8wfc-w2r5-x7cr"
  ],
  "database_specific": {},
  "details": "BookStack is a platform for storing and organising information and documentation. In BookStack before version 0.30.5, a user with permissions to edit a page could set certain image URL's to manipulate functionality in the exporting system, which would allow them to make server side requests and/or have access to a wider scope of files within the BookStack file storage locations. The issue was addressed in BookStack v0.30.5. As a workaround, page edit permissions could be limited to only those that are trusted until you can upgrade.",
  "id": "CVE-2020-26260",
  "modified": "2026-07-08T05:38:25.162514373Z",
  "published": "2020-12-09T17:15:30.477Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://bookstackapp.com/blog/beta-release-v0-30-5/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.30.5"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/BookStackApp/BookStack/security/advisories/GHSA-8wfc-w2r5-x7cr"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}