Auth bypass in Decidim
CVE-2026-45414
Decidim is a participatory democracy framework. Prior to 0.31.5 and in 0.32.0.rc1 before 0.32.0.rc2, JWT-backed API authentication is not bound to the organization selected by the current host, allowing a JWT issued for one tenant to be replayed against another tenant’s API to read participantDetails data and reach the proposal.answer mutation path. This issue is fixed in versions 0.31.5 and 0.32.0.rc2.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (39.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Decidim — versions < 0.31.5, >= 0.32.0.rc1, < 0.32.0.rc2
Weakness classification (CWE)
References
- github.com/decidim/decidim/commit/023e206127c984a501345676e4789b31ddd115a1
- github.com/decidim/decidim/commit/226dc94894e6a3c030e4638c8b3441ee7199643c
- github.com/decidim/decidim/releases/tag/v0.31.5
- github.com/decidim/decidim/releases/tag/v0.32.0.rc2
- github.com/decidim/decidim/security/advisories/GHSA-r3v7-5x4c-c69q
Frequently asked questions
- What is CVE-2026-45414?
- CVE-2026-45414 is a high-severity vulnerability in Decidim, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.5/10. Published 2026-08-06.
- How severe is CVE-2026-45414?
- High severity. CVSS v3 base score is 8.5 out of 10.