Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Decidim | Decidim | < 0.30.5 |
Related Weaknesses (CWE)
References
- https://github.com/decidim/decidim/releases/tag/v0.30.5ProductRelease Notes
- https://github.com/decidim/decidim/releases/tag/v0.31.1ProductRelease Notes
- https://github.com/decidim/decidim/security/advisories/GHSA-fc46-r95f-hq7gVendor Advisory
FAQ
What is CVE-2026-23891?
CVE-2026-23891 is a vulnerability with a CVSS score of 8.7 (HIGH). 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...
How severe is CVE-2026-23891?
CVE-2026-23891 has been rated HIGH with a CVSS base score of 8.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-23891?
Check the references section above for vendor advisories and patch information. Affected products include: Decidim Decidim.