CVE-2026-45086: Decidim

Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days.

Decidim is a participatory democracy framework. From 0.31.1 before 0.31.5 and in 0.32.0.rc1 before 0.32.0.rc2, a participant can directly load /admin/demographics/questions/edit_questions and reach the demographics questionnaire editor without the required administrator authorization. The demographics questionnaire editor should require admin access, but the route under /admin/demographics/questions renders the editor interface without checking whether the caller is an admin. A normal participant can load the page and see the live update form action, which proves the protected interface is reachable. This issue is fixed in versions 0.31.5 and 0.32.0.rc2.

Affected products

• Decidim Decidim: from 0.31.1, before 0.31.5 (fixed in 0.31.5); from 0.32.0.rc1, before 0.32.0.rc2 (fixed in 0.32.0.rc2)

Published 2026-07-31. Last modified 2026-09-08.