CVE-2026-23891: Decidim has a cross-site scripting (XSS) in user name
(updated )
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.
References
- github.com/advisories/GHSA-fc46-r95f-hq7g
- github.com/decidim/decidim/releases/tag/v0.30.5
- github.com/decidim/decidim/releases/tag/v0.31.1
- github.com/decidim/decidim/security/advisories/GHSA-fc46-r95f-hq7g
- github.com/rubysec/ruby-advisory-db/blob/master/gems/decidim-core/CVE-2026-23891.yml
- nvd.nist.gov/vuln/detail/CVE-2026-23891
Code Behaviors & Features
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