CVE-2026-23891HIGH 8.7EPSS p27.4%

CVE-2026-23891CVE-2026-23891

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.

Scoring

CVSS 3.18.7 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
EPSS0.36% probability of exploitation · percentile 27.4% · 2026-06-18T12:00:27Z
Published2026-04-13
Last modified2026-04-22

Underlying weaknesses· 1

CWE-79

References

  1. https://github.com/decidim/decidim/releases/tag/v0.30.5
  2. https://github.com/decidim/decidim/releases/tag/v0.31.1
  3. https://github.com/decidim/decidim/security/advisories/GHSA-fc46-r95f-hq7g

1

TypeTargetConfidenceTier
WeaknessImproper Neutralization of Input During Web Page Generation ('Cross-site Scripting')cwe-790%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.