GHSA-469h-mqg8-535r
GitHub Security Advisory
Decidim Cross-site Scripting vulnerability in the external link redirections
✓ GitHub Reviewed
MODERATE
Has CVE
Advisory Details
### Impact
The external link feature is susceptible to Cross-site scripting. This allows a remote attacker to execute JavaScript code in the context of a currently logged-in user. An attacker could use this vulnerability to make other users endorse or support proposals they have no intention of supporting or endorsing.
### Patches
The problem was patched in [v0.27.3](https://github.com/decidim/decidim/releases/tag/v0.27.3) and [v0.26.7](https://github.com/decidim/decidim/releases/tag/v0.26.7)
Affected Packages
RubyGems
decidim
Affected versions:
0.25.0
(fixed in 0.26.7)
RubyGems
decidim-core
Affected versions:
0.27.0
(fixed in 0.27.3)
RubyGems
decidim-core
Affected versions:
0.25.0
(fixed in 0.26.7)
RubyGems
decidim
Affected versions:
0.27.0
(fixed in 0.27.3)
Related CVEs
Key Information
5.0
/10
Dataset
Last updated: July 13, 2025 6:28 AM
Data from GitHub Advisory Database. This information is provided for research and educational purposes.