SQL Injection in decidim-admin (CVE-2026-45376)
Summary
SQL injection in decidim-admin (CVE-2026-45376). Confidential information can be exposed externally. Exploitable via GET /admin/organization/users. Mitigation: upgrade to 0.32.0 or later.
Original description
The description as published by the source.
The admin organization user search uses the untrusted term value inside raw SQL ORDER BY expressions. Because the value is interpolated before Rails sanitization is applied, a crafted search string is executed by PostgreSQL as part of the sort expression.
Technical description
The vulnerable endpoint is exposed as GET /admin/organization/users in decidim-admin/config/routes.rb:
resource :organization, only: [:edit, :update], controller: "organization" do
member do
get :users
end
end
That route reaches Decidim::Admin::OrganizationController#users, which forwards the current organization's available users into search:
def users
search(current_organization.users.available)
end
Inside search, the attacker-controlled source is params[:term]:
if (term = params[:term].to_s).present?
The query has two branches. In both branches, the WHERE predicates use bind parameters and are not the injection sink. The vulnerability is in the subsequent .order(Arel.sql(...)) calls, where the untrusted value is interpolated directly into SQL string literals.
Nickname branch:
nickname = term.delete("@")
relation.where("nickname LIKE ?", "#{nickname}%")
.order(Arel.sql(ActiveRecord::Base.sanitize_sql_array("similarity(nickname, '#{nickname}') DESC")))
Name/email branch:
relation.where("name ILIKE ?", "%#{term}%").or(
relation.where("email ILIKE ?", "%#{term}%")
)
.order(Arel.sql(ActiveRecord::Base.…
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-45376 has been found in decidim-admin.
Attackers can target a specific entry point like GET /admin/organization/users over the network to misuse the product.
Confidential information can be exposed externally. CVSS score: 5.5/10.
What to do: upgrade decidim-admin to 0.32.0 or later.
If unsure, ask your IT team or search "decidim-admin CVE-2026-45376" on the vendor's site.
CVE-2026-45376 (decidim-admin) — CWE-89 / CVSS v3 5.5
Attack vector: remote (network-reachable) / no user interaction
Attack surface: GET /admin/organization/users / search / WHERE / sanitize_sql_array
Patched: 0.32.0 — apply immediately
Workaround: Review your administrator accesses and not give access to untrustworthy users
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
SQL injection (CWE-89) exists in decidim-admin. Attackers reach the vulnerable code path via GET /admin/organization/users.
Check the vendor advisory for the affected versions of decidim-admin. Attack surface: GET /admin/organization/users / search / WHERE / sanitize_sql_array.
Severity: Medium (CVSS 5.5/10). Confidential information can be exposed externally.
Update to 0.32.0.
Workaround: Review your administrator accesses and not give access to untrustworthy users
Search webserver/proxy logs for unusual GET /admin/organization/users requests with malformed payloads or SQL meta-characters. Run grep -r 'decidim-admin' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'decidim-admin' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
decidim-adminを grep し、稼働しているサービス・バージョンを把握する。 -
2Hunt for indicators of compromise detect
grep 'GET /admin/organization/users' /var/log/nginx/access.log | grep -E '(unusual_payload|sqli_pattern)'アクセスログで
GET /admin/organization/usersへの異常なリクエスト (不正な認証ヘッダ・SQLメタ文字)を過去 30〜90日分捜索。WAF/SIEM があれば該当パスのアラート発火履歴を確認。 -
3Apply temporary workaround mitigate
Review your administrator accesses and not give access to untrustworthy usersパッチが適用されるまでの応急処置として、Review your administrator accesses and not give access to untrustworthy users を実施。回避策の副作用 (機能低下) を確認した上で。
-
4Apply patch patch
Upgrade decidim-admin to 0.32.0ステージング環境で 0.32.0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスと、Step 2 で見つけた異常検知の続報チェックを含めること。
-
5Post-deployment verification verify
Replay attack against GET /admin/organization/users on staging to confirm patch closes the vectorパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番では Step 2 と同じログクエリでアラート再発が無いか継続監視。