Privilege escalation in Decidim
CVE-2026-40869
Decidim is a participatory democracy framework. Starting in version 0.19.0 and prior to versions 0.30.5 and 0.31.1, a vulnerability allows any registered and authenticated user to accept or reject any amendments. The impact is on any users…
EPSS: 0.000 (12.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Decidim — versions >= 0.31.0.rc1, < 0.31.1, >= 0.19.0, < 0.30.5
Weakness classification (CWE)
References
- https://github.com/decidim/decidim/security/advisories/GHSA-w5xj-99cg-rccm (x_refsource_CONFIRM)
- https://github.com/decidim/decidim/commit/1b99136a1c7aa02616a0b54a6ab88d12907a57a9 (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-40869?
- CVE-2026-40869 is a high-severity vulnerability in Decidim, classified under Incorrect Privilege Assignment. CVSS score: 7.5/10. Published 2026-04-21.
- How severe is CVE-2026-40869?
- High severity. CVSS v3 base score is 7.5 out of 10.