GEM · JULY 2026 · EARLY WARNING

Decidim Gem Vulnerability: Private Exports Accessible via Reusable Links

EARLY WARNING · UNCONFIRMED. This page describes a developing threat that 0Day surfaced from early signals and has not yet independently confirmed. Details may change. Always verify against the primary sources before acting.
GHSA-767H-63J4-5226Severity: HIGH

An early warning has been issued regarding a vulnerability in the Decidim gem that allows authenticated users to generate reusable links for downloading private exports, potentially leading to unauthorized access.

What happened

The Decidim gem's private export flow reportedly allows authenticated users to generate reusable links for downloading private exports without requiring further authentication. This can lead to unauthorized access to private data. The vulnerability affects various versions of the gem, as detailed in the provided data. It is recommended to upgrade to the latest version of the Decidim gem and review any private exports that may have been exposed. For specific version details and fixed versions, consult the primary sources.

How 0Day mitigates this

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