What’s Vulnerable › Vulnerabilities

CVE-2026-45086: Decidim: Forms admin question editor lacks authorization

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-31 · updated 2026-09-08
• Weakness: CWE-862

Description

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: from 0.31.1, < 0.31.5; from 0.32.0.rc1, < 0.32.0.rc2

References

• https://github.com/decidim/decidim/commit/fa52fb631a0788b30895d1312728a888607d81b5
• https://github.com/decidim/decidim/commit/fc89301c6697c6101a7aed3fced3fa8311048cb9
• https://github.com/decidim/decidim/security/advisories/GHSA-vq6j-hj8w-7v39
• https://github.com/decidim/decidim/security/advisories/GHSA-vq6j-hj8w-7v39

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