{"id":"CVE-2026-45378","summary":"Decidim: Verification documents can be downloaded through reusable links","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.","aliases":["GHSA-3mvf-82qp-8qh5"],"modified":"2026-10-28T02:31:04.887019429Z","published":"2026-08-06T20:15:40.126Z","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"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/decidim/decidim","events":[{"introduced":"0"},{"fixed":"899e5a43fa02b4709d95b63de7294289ea87cc41"},{"introduced":"c3bc51462268ff734342aac28f456ac77837d4c8"},{"fixed":"03d80881ac459127f0e11999c8a733cf78e78736"},{"introduced":"1f92fc97fd7186639617ce1b2ca53b6cbecb1eb8"},{"fixed":"f891077eb17bccc05afb1ba65c5c3073e811703c"}],"database_specific":{"extracted_events":[{"source":"AFFECTED_FIELD","strategy":"StringRangeExpression","range":[{"introduced":"0"},{"fixed":"0.30.9"}]},{"strategy":"StringRangeExpression","range":[{"introduced":"0.31.0.rc1"},{"fixed":"0.31.5"}],"source":"AFFECTED_FIELD"},{"strategy":"StringRangeExpression","range":[{"introduced":"0.32.0.rc1"},{"fixed":"0.32.0"}],"source":"AFFECTED_FIELD"}]}}],"versions":["v0.32.0.rc3","v0.32.0.rc2","v0.30.8","v0.31.4","v0.32.0.rc1","v0.30.7","v0.31.3","v0.30.6","v0.31.2","v0.31.1","v0.30.5","v0.30.4","v0.31.0","v0.30.3","v0.31.0.rc2","v0.30.2","v0.31.0.rc1","v0.30.1","v0.30.0","v0.30.0.rc3","v0.30.0.rc2","v0.30.0.rc1","v0.20.0","v0.5.0","v0.4.0","v0.3.0","v0.2.0","v0.1.0","v0.0.8.1","v0.0.8","v0.0.7","v0.0.6","v0.0.5","v0.0.4","v0.0.3","v0.0.2","v0.0.1","v0.0.1.alpha9","v0.0.1.alpha8","v0.0.1.alpha7","v0.0.1.alpha6","v0.0.1.alpha5","v0.0.1.alpha4","v0.0.1.alpha3","v0.0.1.alpha2","v0.0.1.alpha1","v0.0.1.alpha"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45378.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}