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Vulnerability record · CVE-2023-36465 · published 6 October 2023

CVE-2023-36465: Decidim improper access control vulnerability

Decidim · Decidim

Decidim is a participatory democracy framework, written in Ruby on Rails, originally developed for the Barcelona City government online and offline participation website. The `templates` module doesn't enforce the correct permissions, allowing any logged-in user to access to this functionality in the administration panel. An attacker could use this vulnerability to change, create or delete templates of surveys. This issue has been patched in version 0.26.8 and 0.27.4.

7.1 CVSS 3.1 High EPSS 0.54% · top 56.8% CWE-284 · Improper access controlCWE-732 · Incorrect permission assignment
7.1CVSS 3.1 base score
0.54%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

Decidim is a participatory democracy framework, written in Ruby on Rails, originally developed for the Barcelona City government online and offline participation website. The `templates` module doesn't enforce the correct permissions, allowing any logged-in user to access to this functionality in the administration panel. An attacker could use this vulnerability to change, create or delete templates of surveys. This issue has been patched in version 0.26.8 and 0.27.4.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/decidim/decidim/releases/tag/v0.26.8 Release Notes
https://github.com/decidim/decidim/releases/tag/v0.27.4 Release Notes
https://github.com/decidim/decidim/security/advisories/GHSA-639h-86hw-qcjq Vendor Advisory
https://github.com/decidim/decidim/releases/tag/v0.26.8 Release Notes
https://github.com/decidim/decidim/releases/tag/v0.27.4 Release Notes
https://github.com/decidim/decidim/security/advisories/GHSA-639h-86hw-qcjq Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-36465), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.