Missing Authorization Affecting decidim-api package, versions <0.30.5>=0.30.0.rc1, <0.31.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published22 Apr 2026
- disclosed21 Apr 2026
- creditAntti Hukkanen
Introduced: 21 Apr 2026
NewCVE-2026-40870 (opens in a new tab)How to fix?
Upgrade decidim-api to version 0.30.5, 0.31.1 or higher.
Overview
Affected versions of this package are vulnerable to Missing Authorization via the commentable field in the API, which allows access to all commentable resources without permission checks. An attacker can retrieve sensitive information by sending unauthenticated requests to the /api endpoint.
Workaround
This vulnerability can be mitigated by limiting access to the /api endpoint to only authenticated users, either through custom code or by installing the third-party module Decidim::Apiauth. Alternatively, the endpoint can be disabled entirely by adjusting configuration settings.