ChurchCRM has an Open Redirect via the ‘linkBack’ URL Parameter in DonatedItemEditor.php_CVE-2026-39940

{
    "lastseen": "",
    "description": "ChurchCRM is an open-source church management system. Prior to 7.0.0, it was possible in many places across the ChurchCRM application to create a link that, when visited by an authenticated user, would redirect them to any URL chosen by an attacker if they clicked 'Cancel' button on the page. For this write-up the DonatedItemEditor.php will be used as an example, however wherever all instances of 'linkBack' should be assessed. This vulnerability is fixed in 7.0.0.",
    "published": "2026-04-13T16:34:58.495Z",
    "modified": "2026-04-13T16:34:58.495Z",
    "type": "cve",
    "title": "ChurchCRM has an Open Redirect via the \u2018linkBack\u2019 URL Parameter in DonatedItemEditor.php",
    "source": "GitHub_M",
    "references": "https://github.com/ChurchCRM/CRM/security/advisories/GHSA-5g52-rvjf-6wwf\nhttps://github.com/ChurchCRM/CRM/security/advisories/GHSA-v3hj-33xf-qx47",
    "id": "CVE-2026-39940",
    "bulletinFamily": "",
    "cwe": [
        "CWE-601"
    ],
    "cvelist": null,
    "sourceData": "ChurchCRM CRM < 7.0.0",
    "sourceHref": "",
    "cvss": {
        "score": 5.3,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
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            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "CRM",
    "version": "< 7.0.0",
    "vendor": "ChurchCRM",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}