{"id":"CVE-2026-39940","state":"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.","publishedAt":"2026-04-13T16:34:58.495Z","updatedAt":"2026-04-16T13:26:41.668Z","severity":{"score":5.3,"label":"Medium","version":"4.0","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","source":"GitHub_M"},"assigner":"GitHub_M","products":["ChurchCRM CRM"],"affected":[{"vendor":"ChurchCRM","product":"CRM","versions":[{"version":"< 7.0.0","status":"affected"}]}],"references":["https://github.com/ChurchCRM/CRM/security/advisories/GHSA-5g52-rvjf-6wwf","https://github.com/ChurchCRM/CRM/security/advisories/GHSA-v3hj-33xf-qx47"],"weaknesses":["CWE-601"],"ingestedAt":"2026-10-29T20:11:50.837Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/39xxx/CVE-2026-39940.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-39940","state":"PUBLISHED","datePublished":"2026-04-13T16:34:58.495Z","dateUpdated":"2026-04-16T13:26:41.668Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-04-07T22:40:33.820Z"},"containers":{"cna":{"title":"ChurchCRM has an Open Redirect via the ‘linkBack’ URL Parameter in DonatedItemEditor.php","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"ChurchCRM","product":"CRM","versions":[{"version":"< 7.0.0","status":"affected"}]}],"references":[{"url":"https://github.com/ChurchCRM/CRM/security/advisories/GHSA-5g52-rvjf-6wwf","name":"https://github.com/ChurchCRM/CRM/security/advisories/GHSA-5g52-rvjf-6wwf","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/ChurchCRM/CRM/security/advisories/GHSA-v3hj-33xf-qx47","name":"https://github.com/ChurchCRM/CRM/security/advisories/GHSA-v3hj-33xf-qx47","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","subAvailabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-601","lang":"en","description":"CWE-601: URL Redirection to Untrusted Site ('Open Redirect')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-04-13T16:34:58.495Z"},"source":{"advisory":"GHSA-5g52-rvjf-6wwf","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-39940","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-04-16T13:18:19.387037Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-16T13:26:41.668Z"}}]}}}