CVE-2024-27090
Decidim vulnerable to data disclosure through the embed feature
Decidim is a participatory democracy framework, written in Ruby on Rails, originally developed for the Barcelona City government online and offline participation website. If an attacker can infer the slug or URL of an unpublished or private resource, and this resource can be embbeded (such as a Participatory Process, an Assembly, a Proposal, a Result, etc), then some data of this resource could be accessed. This vulnerability is fixed in 0.27.6.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Decidim vulnerable to data disclosure through the embed feature
Decidim is a participatory democracy framework, written in Ruby on Rails, originally developed for the Barcelona City government online and offline participation website. If an attacker can infer the slug or URL of an unpublished or private resource, and this resource can be embbeded (such as a Participatory Process, an Assembly, a Proposal, a Result, etc), then some data of this resource could be accessed. This vulnerability is fixed in 0.27.6.
- Record
CVE-2024-27090- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
EUVDEUVD-2024-2404
Decidim is a participatory democracy framework, written in Ruby on Rails, originally developed for the Barcelona City government online and offline participation website. If an attacker can infer the slug or URL of an unpublished or private resource, and this resource can be embbeded (such as a Participatory Process, an Assembly, a Proposal, a Result, etc), then some data of this resource could be accessed. This vulnerability is fixed in 0.27.6.
- Record
EUVD-2024-2404- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-qcj6-vxwx-4rqv
Decidim vulnerable to data disclosure through the embed feature
Impact
If an attacker can infer the slug or URL of an unpublished or private resource, and this resource can be embedded (such as a Participatory Process, an Assembly, a Proposal, a Result, etc), then some data of this resource could be accessed.
Patches
version 0.27.6
https://github.com/decidim/decidim/commit/1756fa639ef393ca8e8bb16221cab2e2e7875705
Workarounds
Disallow access through your web server to the URLs finished with /embed.html
- Record
GHSA-qcj6-vxwx-4rqv- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N - CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
NVD
Decidim is a participatory democracy framework, written in Ruby on Rails, originally developed for the Barcelona City government online and offline participation website. If an attacker can infer the slug or URL of an unpublished or private resource, and this resource can be embbeded (such as a Participatory Process, an Assembly, a Proposal, a Result, etc), then some data of this resource could be accessed. This vulnerability is fixed in 0.27.6.
- Record
CVE-2024-27090- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
OSV
Decidim vulnerable to data disclosure through the embed feature
Decidim is a participatory democracy framework, written in Ruby on Rails, originally developed for the Barcelona City government online and offline participation website. If an attacker can infer the slug or URL of an unpublished or private resource, and this resource can be embbeded (such as a Participatory Process, an Assembly, a Proposal, a Result, etc), then some data of this resource could be accessed. This vulnerability is fixed in 0.27.6.
- Record
CVE-2024-27090- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
OSVGHSA-qcj6-vxwx-4rqv
Decidim vulnerable to data disclosure through the embed feature
Impact
If an attacker can infer the slug or URL of an unpublished or private resource, and this resource can be embedded (such as a Participatory Process, an Assembly, a Proposal, a Result, etc), then some data of this resource could be accessed.
Patches
version 0.27.6
https://github.com/decidim/decidim/commit/1756fa639ef393ca8e8bb16221cab2e2e7875705
Workarounds
Disallow access through your web server to the URLs finished with /embed.html
- Record
GHSA-qcj6-vxwx-4rqv- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N - CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
decidimRubyGems |
before 0.27.6 | 0.27.6 |
decidimRubyGems |
before 0.27.6, plus listed versions 0.0.10.0.1.alpha10.0.1.alpha20.0.1.alpha30.0.1.alpha4 Show 45 moreShow less0.0.1.alpha50.0.1.alpha60.0.1.alpha70.0.1.alpha80.0.1.alpha90.0.20.0.30.0.40.0.50.0.60.0.70.0.8.10.1.00.10.00.10.10.11.0.pre10.11.10.11.20.12.00.12.0.pre0.12.10.12.20.13.00.13.0.pre10.13.10.14.10.14.20.14.30.14.40.15.00.15.10.15.20.16.00.16.10.17.00.17.10.17.20.18.00.18.10.19.00.19.10.2.00.20.00.20.10.21.0 |
0.27.6 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2024-27090 is a medium vulnerability (CVSS 5.3) in Decidim, published July 10, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.49%, the 42nd percentile. Fixed in decidim 0.27.6.
References
github.com/decidim/decidim/security/advisories/GHSA-qcj6-vxwx-4rqv
nvd.nist.gov/vuln/detail/CVE-2024-27090
Left out here: 74 versions. The JSON record has them.