CVE-2023-47635 Decidim vulnerable to possible CSRF attack at questionnaire templates preview
Attackers can bypass CSRF checks on questionnaire template previews to access non-public information if they possess the victim's session cookie.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2023-47635?
CVE-2023-47635 is a medium-severity vulnerability in decidim, published on 20 Feb 2024. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
Decidim is a participatory democracy framework. Starting in version 0.23.0 and prior to versions 0.27.5 and 0.28.0, the CSRF authenticity token check is disabled for the questionnaire templates preview. The issue does not imply a serious security thread as you need to have access also to the session cookie in order to see this resource. This URL does not allow modifying the resource but it may allow attackers to gain access to information which was not meant to be public. The issue is fixed in version 0.27.5 and 0.28.0. As a workaround, disable the templates functionality or remove all available templates.
Which versions are affected by CVE-2023-47635?
2 open source packages ship an affected version, including decidim-templates. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
decidim-templates RubyGems | From 0.23.0 | 0.27.5 |
decidim-templates RubyGems | From 0.23.0 | 0.27.5 |
Products include Decidim Decidim.
How do I fix CVE-2023-47635?
Upgrade decidim-templates to 0.27.5 or later.
Is CVE-2023-47635 being exploited?
There is no known exploitation of CVE-2023-47635 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-2023-36465 Decidim has broken access control in templates
- 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
Sources
Also known as GHSA-f3qm-vfc3-jg6v.