CVE-2023-36465 Decidim has broken access control in templates
Logged-in users can improperly access the administration panel to create, modify, or delete survey templates due to missing permission checks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-36465?
CVE-2023-36465 is a critical missing authorization vulnerability in decidim, published on 6 Oct 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2023-36465?
8 open source packages ship an affected version, including decidim and decidim-templates. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
decidim RubyGems | From 0.23.2 | 0.26.8 |
decidim RubyGems | From 0.23.2 | 0.26.8 |
decidim RubyGems | From 0.27.0 | 0.27.4 |
decidim RubyGems | From 0.27.0 | 0.27.4 |
decidim-templates RubyGems | From 0.23.2 | 0.26.8 |
decidim-templates RubyGems | From 0.23.2 | 0.26.8 |
2 more packages
decidim-templates RubyGems | From 0.27.0 | 0.27.4 |
decidim-templates RubyGems | From 0.27.0 | 0.27.4 |
Products include Decidim Decidim.
How do I fix CVE-2023-36465?
Upgrade decidim to a fixed version for your release line: 0.26.8 or 0.27.4.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2023-36465 being exploited?
There is no known exploitation of CVE-2023-36465 in the wild and no public exploit code.
Other vulnerabilities in decidim
- CVE-2026-23891 Decidim has a Cross-site scripting (XSS) vulnerability via user name field
- CVE-2025-65017 Decidim's private data exports can lead to data leaks
- CVE-2023-32693 Decidim Cross-site Scripting vulnerability in the external link redirections
- CVE-2023-34089 Decidim Cross-site Scripting vulnerability in the processes filter
- CVE-2024-45594 Decidim allows cross-site scripting (XSS) in the online or hybrid meeting embeds
Sources
Also known as GHSA-639h-86hw-qcjq.