Vulnerability · Published Feb 3, 2026 · Assigned by GitHub_M

CVE-2025-65017Decidim's private data exports can lead to data leaks

High 8.2

In plain English

A high-severity information exposure in decidim from decidim. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)8.2High

Exploit odds (30 days)0.3%top 75.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Decidim is a participatory democracy framework. In versions from 0.30.0 to before 0.30.4 and from 0.31.0.rc1 to before 0.31.0, the private data exports can lead to data leaks in case the UUID generation, causing collisions for the generated UUIDs. This issue has been patched in versions 0.30.4 and 0.31.0.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
RubyGems	decidim	0.30.4	GHSA-3cx6-j9j4-54mp
RubyGems	decidim-core	0.30.4	GHSA-3cx6-j9j4-54mp

Affected products (as reported)

Vendor	Product	Versions
decidim	decidim	>= 0.30.0, < 0.30.4>= 0.31.0.r1, < 0.31.0

Weakness: CWE-200, CWE-703 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

References

https://github.com/decidim/decidim/security/advisories/GHSA-3cx6-j9j4-54mp x_refsource_CONFIRM
https://github.com/decidim/decidim/pull/13571 x_refsource_MISC
https://github.com/decidim/decidim/releases/tag/v0.30.4 x_refsource_MISC
https://github.com/decidim/decidim/releases/tag/v0.31.0 x_refsource_MISC