{"id":"CVE-2026-39940","aliases":["EUVD-2026-22011"],"status":"published","title":"ChurchCRM has an Open Redirect via the ‘linkBack’ URL Parameter in DonatedItemEditor.php","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.","severity":{"version":"4.0","score":5.3,"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0028,"percentile":0.20642,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-601"],"published":"2026-04-13T16:34:58Z","modified":"2026-10-28T02:30:32Z","products":[{"vendor":"churchcrm","product":"crm"}],"references":[{"url":"https://github.com/ChurchCRM/CRM/security/advisories/GHSA-5g52-rvjf-6wwf","tags":["x_refsource_CONFIRM","advisory"]},{"url":"https://github.com/ChurchCRM/CRM/security/advisories/GHSA-v3hj-33xf-qx47","tags":["x_refsource_MISC","advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39940.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39940","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-39940","title":"ChurchCRM has an Open Redirect via the ‘linkBack’ URL Parameter in DonatedItemEditor.php","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.","status":"published","published":"2026-04-13T16:34:58.495Z","modified":"2026-04-16T13:26:41.668Z","cvss":[{"version":"4.0","score":5.3,"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","level":"medium","assessor":"cna"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:20:02.290587Z"}],"euvd":[{"id":"EUVD-2026-22011","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.","status":"published","published":"2026-04-13T16:34:58Z","modified":"2026-04-16T13:26:41Z","cvss":[{"version":"4.0","score":5.3,"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","level":"medium"}],"updated_at":"2026-11-02T19:24:24.386229Z"}],"nvd":[{"id":"CVE-2026-39940","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.","status":"published","published":"2026-04-13T17:16:30.45Z","modified":"2026-10-26T21:10:00.17Z","cvss":[{"version":"4.0","score":5.3,"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:12:14.37744Z"}],"osv":[{"id":"CVE-2026-39940","title":"ChurchCRM has an Open Redirect via the ‘linkBack’ URL Parameter in DonatedItemEditor.php","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.","status":"published","published":"2026-04-13T16:34:58.495Z","modified":"2026-10-28T02:30:32.838581552Z","cvss":[{"version":"4.0","score":5.3,"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","level":"medium"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T15:45:03.040464Z"}]}}