Cross-Site Scripting (XSS) in ChurchCRM (CVE-2026-39344)
Summary
Cross-site scripting in ChurchCRM (CVE-2026-39344). Confidential information can be exposed externally. Mitigation: upgrade to 7.1.0 or later.
Original description
The description as published by the source.
ChurchCRM is an open-source church management system. Prior to 7.1.0, there is a Reflected Cross-Site Scripting (XSS) vulnerability on the login page, which is caused by the lack of sanitization or encoding of the username parameter received from the URL. The username parameter value is directly displayed in the login page input element without filter, allowing attackers to insert malicious JavaScript scripts. If successful, script can be executed on the client side, potentially stealing sensitive data such as session cookies or replacing the display to show the attacker's login form. This vulnerability is fixed in 7.1.0.
Source: NIST National Vulnerability Database 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-2026-39344 has been found in ChurchCRM.
Confidential information can be exposed externally. CVSS score: 8.1/10.
What to do: upgrade ChurchCRM to 7.1.0 or later.
If unsure, ask your IT team or search "ChurchCRM CVE-2026-39344" on the vendor's site.
CVE-2026-39344 (ChurchCRM) — CWE-79 / CVSS v3 8.1
Attack vector: remote (network-reachable) / unauthenticated
Patched: 7.1.0 — apply immediately
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.
Cross-site scripting (XSS) (CWE-79) exists in ChurchCRM.
Check the vendor advisory for the affected versions of ChurchCRM.
Severity: High (CVSS 8.1/10). Confidential information can be exposed externally.
Update to 7.1.0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'ChurchCRM' . 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
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1Identify exposure identify
grep -r 'ChurchCRM' . | 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
ChurchCRMを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade ChurchCRM to 7.1.0ステージング環境で 7.1.0 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を含めること。
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3Post-deployment verification verify
Confirm patched version is live in production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。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov