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

Quick assessment

Affected
decidim decidim
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Decidim是Decidim组织开源的一个参与式民主框架,用 Ruby on Rails 编写。 Decidim 0.31.1至0.31.5之前版本和0.32.0.rc1至0.32.0.rc2之前版本存在授权问题漏洞，该漏洞源于对/admin/demographics/questions路由的访问控制不当，未验证调用者是否为管理员，导致普通参与者可访问受保护的管理编辑器界面。

CVSS 5.4 · Medium EPSS 0.29% · P20

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 2

VendorProduct Version RangeStatus
decidim decidim >= 0.31.1, < 0.31.5 affected
>= 0.32.0.rc1, < 0.32.0.rc2 affected
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I. Basic Information for CVE-2026-45086

Vulnerability Information
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Vulnerability Title
Decidim: Forms admin question editor lacks authorization
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Decidim 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Decidim是Decidim组织开源的一个参与式民主框架,用 Ruby on Rails 编写。 Decidim 0.31.1至0.31.5之前版本和0.32.0.rc1至0.32.0.rc2之前版本存在授权问题漏洞，该漏洞源于对/admin/demographics/questions路由的访问控制不当，未验证调用者是否为管理员，导致普通参与者可访问受保护的管理编辑器界面。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
decidim decidim >= 0.31.1, < 0.31.5 -

II. Public POCs for CVE-2026-45086

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III. Intelligence Information for CVE-2026-45086

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Patches & Fixes for CVE-2026-45086 (2)

Vendor Advisories for CVE-2026-45086 (1)

Same Patch Batch · decidim · 2026-07-31 · 4 CVEs total

CVE-2026-45377 6.5 MEDIUM Decidim: Private exports can be downloaded through reusable links
CVE-2026-45376 5.5 MEDIUM Decidim: Admin user search allows SQL injection through similarity-based sorting
CVE-2026-45330 4.9 MEDIUM Decidim: Verification admins can access supplied IDs from other organisations

IV. Related Vulnerabilities

Same product: decidim
Same vendor: decidim
Same weakness: CWE-862

V. Comments for CVE-2026-45086

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