CVE-2026-45377 Decidim: Private exports can be downloaded through reusable links

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 normal downloadyourdata flow requires the requester to be logged in as the export owner, but the resulting Active Storage blob redirect URL can be replayed without...

CVE-2026-45377

CVE-2026-45377 affects Decidim where the normal download_your_data flow authenticates the export owner but redirects to a signed Active Storage blob URL that is not bound to the owner session. This allows replay of the redirect URL by anyone who obtains it, enabling access to private exports. Aff...

Decidim: Private exports can be downloaded through reusable links

Description The normal downloadyourdata flow requires the requester to be logged in as the export owner, but the resulting Active Storage blob redirect URL can be replayed without authentication by anyone who obtains it. Technical description This private export flow turns an authenticated,...

Authorization Bypass Through User-Controlled Key

Overview Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key via the privateexports process. An attacker can access another user's private data exports by exploiting UUID collisions that occur when the UUID is converted to an integer, causing files...

Authorization Bypass Through User-Controlled Key

Overview Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key via the privateexports process. An attacker can access another user's private data exports by exploiting UUID collisions that occur when the UUID is converted to an integer, causing files...

PT-2026-6353

Impact Private data exports can lead to data leaks in cases where the UUID generation causes collisions for the generated UUIDs. The bug was introduced by 13571 and affects Decidim versions 0.30.0 or newer currently 2025-09-23. This issue was discovered by running the following spec several times...