{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0.31.0"
              },
              {
                "fixed": "0.31.5"
              },
              {
                "introduced": "0.32.0.rc1"
              },
              {
                "fixed": "0.32.0.rc2"
              }
            ],
            "source": "DESCRIPTION"
          },
          "events": [
            {
              "introduced": "0795da14454a4fb342d70654bdc267d1d6d5bca5"
            },
            {
              "fixed": "03d80881ac459127f0e11999c8a733cf78e78736"
            },
            {
              "introduced": "1f92fc97fd7186639617ce1b2ca53b6cbecb1eb8"
            },
            {
              "fixed": "867174012910ba4f5f020a27444d47309fd19122"
            }
          ],
          "repo": "https://github.com/decidim/decidim",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-3mvf-82qp-8qh5"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-200"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45378.json"
  },
  "details": "Decidim is a participatory democracy framework. Prior to 0.30.9, from 0.31.0 before 0.31.5, and in 0.32.0.rc1 before 0.32.0.rc2, the identity-document verification admin UI embeds verification_attachment blobs through reusable signed Active Storage disk URLs, allowing anyone who obtains a URL to download the scanned document without an authenticated Decidim session until the signature expires. Verification-document images are rendered with variant_url(...), which produces signed /rails/active_storage/disk/... links instead of routing the file through an authorization-checking controller. Because Decidim configures Active Storage service URLs to remain valid for seven days, the URL itself becomes the credential for that period. The affected files are verification_attachment blobs on Decidim::Authorization, and the admin review pages embed those signed URLs directly into the HTML for pending and confirmation views. This issue is fixed in versions 0.30.9, 0.31.5, and 0.32.0.rc2.",
  "id": "CVE-2026-45378",
  "modified": "2026-09-10T03:30:22.796125547Z",
  "published": "2026-08-06T20:15:40.126Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45378.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/decidim/decidim/security/advisories/GHSA-3mvf-82qp-8qh5"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45378"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Decidim: Verification documents can be downloaded through reusable links"
}