---
id: CVE-2026-45377
title: Decidim is a participatory democracy framework
summary: >-
  Decidim is a participatory democracy framework. Prior to 0.30.9, from 0.31.0
  before 0.31.5, and in 0.32.0.rc1 before 0.32.0.rc2, the normal
  download_your_data flow requires the requester to be logged in as the export
  owner, but the resul…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N'
cwe:
  - CWE-200
  - CWE-284
vendor: decidim-core
product: decidim-core
affected:
  - decidim-core < 0.30.9
  - 'decidim-core >= 0.31.0.rc1, < 0.31.5'
  - 'decidim-core >= 0.32.0.rc1, < 0.32.0'
patched:
  - decidim-core 0.30.9
  - decidim-core 0.31.5
  - decidim-core 0.32.0
published: '2026-07-31'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T20:51:43.490'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-45377'
references:
  - url: 'https://github.com/decidim/decidim/pull/16680'
    label: security-advisories@github.com
  - url: 'https://github.com/decidim/decidim/security/advisories/GHSA-767h-63j4-5226'
    label: security-advisories@github.com
  - url: 'https://github.com/decidim/decidim/security/advisories/GHSA-767h-63j4-5226'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://github.com/advisories/GHSA-767h-63j4-5226'
tags:
  - nvd
  - ghsa
  - rubygems
epss: 0.00453
epssPercentile: 0.3674
aliases:
  - GHSA-767h-63j4-5226
ecosystem: rubygems
ingestedAt: '2026-07-13T17:27:58.990Z'
---

## Overview

Decidim is a participatory democracy framework. Prior to 0.30.9, from 0.31.0 before 0.31.5, and in 0.32.0.rc1 before 0.32.0.rc2, the normal download_your_data flow requires the requester to be logged in as the export owner, but the resulting Active Storage blob redirect URL can be replayed without authentication by anyone who obtains it. This is because Decidim::DownloadYourDataController#download_file authenticates the export owner but redirects to a signed Active Storage blob URL that is no longer bound to the owner session. This issue is fixed in versions 0.30.9, 0.31.5, and 0.32.0.rc2.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-45377)

Affected packages:

- `decidim-core < 0.30.9`
- `decidim-core >= 0.31.0.rc1, < 0.31.5`
- `decidim-core >= 0.32.0.rc1, < 0.32.0`

Patched in:

- `decidim-core 0.30.9`
- `decidim-core 0.31.5`
- `decidim-core 0.32.0`

Source: https://github.com/advisories/GHSA-767h-63j4-5226