Back to feed
EUVD-2026-22024 · Published Apr 13, 2026
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.
Technologies
Decidim DecidimDecidim-Core Decidim-Core
Weaknesses
CWE-79
CVSS scores
- v4.09.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - v3.18.7
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
MITRE ATT&CK
InferredWhere this vulnerability fits in an attack
Initial Access
References
- https://github.com/decidim/decidim/releases/tag/v0.30.5
- https://github.com/decidim/decidim/releases/tag/v0.31.1
- https://github.com/decidim/decidim/security/advisories/GHSA-fc46-r95f-hq7g
- https://nvd.nist.gov/vuln/detail/CVE-2026-23891
- https://github.com/decidim/decidim
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/decidim-core/CVE-2026-23891.yml
Potentially impacted assets
See if this affects your attack surface
