CVE-2026-44282
Received Received - Intake

Stored XSS in Decidim Question Body via html_safe

Publication date: 2026-09-15

Last updated on: 2026-09-15

Assigner: GitHub, Inc.

Description
Decidim is a participatory democracy framework. Prior to 0.32.0, a low-privilege process-scoped administrator or election editor with question-management rights can store HTML or script-bearing content in question.body. The question_title helper returns the translatable question body through html_safe without a sanitization boundary, causing stored script execution when visitors open public election pages or voting booth screens. The persisted script executes in visitors' browsers. The vulnerability is fixed in 0.32.0.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-09-15
Last Modified
2026-09-15
Generated
2026-09-15
AI Q&A
2026-09-15
EPSS Evaluated
N/A
NVD
CVE-2026-44282
EUVD
EUVD-2026-78669

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
decidim decidim-elections to 0.32.0 (exc)
decidim decidim *
decidim decidim 0.32.0

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

CVE-2026-44282 is a stored cross-site scripting (XSS) vulnerability in the Decidim platform affecting versions prior to 0.32.0. A low-privilege admin with election management rights can inject malicious HTML or JavaScript into election question titles or bodies. When rendered in public election pages, the unsanitized content executes in visitors' browsers, potentially compromising their sessions.

Detection Guidance

Check Decidim version with `bundle show decidim` or `gem list decidim`. If version is below 0.32.0, the system is vulnerable. Inspect election question titles in the admin panel for unusual HTML or script tags. Review server logs for unexpected client-side script execution during page loads.

Impact Analysis

This vulnerability allows attackers to execute arbitrary scripts in the browsers of visitors viewing public election pages. This could lead to session hijacking, theft of sensitive data, or defacement of election pages. Users with low privileges could escalate their access by exploiting this flaw.

Compliance Impact

This vulnerability could violate GDPR by exposing user data through script execution or HIPAA by compromising protected health information if election systems handle such data. Unauthorized script execution may lead to data breaches, resulting in regulatory penalties and loss of trust.

Mitigation Strategies

Upgrade Decidim to version 0.32.0 or later immediately. Apply the patch from PR #16669 or #16659 if custom backporting is needed. Remove `.html_safe` from question_title helper in application code. Audit election questions for existing malicious scripts and sanitize stored content.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-44282. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart