CVE-2026-23891 — Decidim has a Cross-site scripting (XSS) vulnerability via user name field
Decidim is a participatory democracy framework. In versions below 0.30.5 and 0.31.0.rc1 through 0.31.0, a stored code execution vulnerability in the user name field allows a low…
Published: 2026-04-13 · CVSS: 9.3 · CVSS 4.0
Decidim is a participatory democracy framework. In versions below 0.30.5 and 0.31.0.rc1 through 0.31.0, 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. This issue has been fixed in versions 0.30.5 and 0.31.1.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7