CVE-2026-40869— Decidim amendments can be accepted or rejected by anyone
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I. Basic Information for CVE-2026-40869
Vulnerability Information
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Vulnerability Title
Decidim amendments can be accepted or rejected by anyone
Source: NVD (National Vulnerability Database)
Vulnerability Description
Decidim is a participatory democracy framework. Starting in version 0.19.0 and prior to versions 0.30.5 and 0.31.1, a vulnerability allows any registered and authenticated user to accept or reject any amendments. The impact is on any users who have created proposals where the amendments feature is enabled. This also elevates the user accepting the amendment as the author of the original proposal as people amending proposals are provided coauthorship on the coauthorable resources. Versions 0.30.5 and 0.31.1 fix the issue. As a workaround, disable amendment reactions for the amendable component (e.g. proposals).
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
特权授予不正确
Source: NVD (National Vulnerability Database)
Vulnerability Title
Decidim 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Decidim是Decidim开源的一个参与式民主框架，用 Ruby on Rails 编写。 Decidim 0.19.0版本至0.30.5和0.31.1之前版本存在安全漏洞，该漏洞源于允许任何注册且经过身份验证的用户接受或拒绝任何修订，可能导致用户权限提升。
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
II. Public POCs for CVE-2026-40869
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IV. Related Vulnerabilities
Same product: decidim
- CVE-2026-40870
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Decidim's private data exports can lead to data leaks - CVE-2024-45594
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Decidim has a cross-site scripting vulnerability in the vers
Same vendor: decidim
- CVE-2026-40870
Decidim's comments API allows access to all commentable reso - CVE-2026-23891
Decidim has a Cross-site scripting (XSS) vulnerability via u - CVE-2025-65017
Decidim's private data exports can lead to data leaks - CVE-2024-45594
Decidim allows cross-site scripting (XSS) in the online or h - CVE-2024-41673
Decidim has a cross-site scripting vulnerability in the vers
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