GHSA-fc46-r95f-hq7gCriticalCVSS 8.7
Decidim has a cross-site scripting (XSS) in user name
🔗 CVE IDs covered (1)
📋 Description
Impact
A stored code execution vulnerability in the user name field allows a low-privileged attacker to execute arbitrary code in the context of any user who passively visits a comment page, resulting in high confidentiality and integrity impact across security boundaries.
Patches
N/A
Workarounds
Not available
References
OWASP ASVS v4.0.3-5.1.3
Credits
This issue was discovered in a security audit organized by octree and made by Secu Labs against Decidim financed by the city of Lausanne (Switzerland).
🎯 Affected products2
- rubygems/decidim-core:>= 0.31.0.rc1, < 0.31.0
- rubygems/decidim-core:< 0.30.5
🔗 References (6)
- https://github.com/decidim/decidim/security/advisories/GHSA-fc46-r95f-hq7g
- https://github.com/decidim/decidim/releases/tag/v0.30.5
- https://github.com/decidim/decidim/releases/tag/v0.31.1
- https://nvd.nist.gov/vuln/detail/CVE-2026-23891
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/decidim-core/CVE-2026-23891.yml
- https://github.com/advisories/GHSA-fc46-r95f-hq7g