CVE-2026-39940
mediumpriority · track · 0EPSS 0.003 · 19 %ileEUEPSS · scored 2026-10-28
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 1.3–5.3
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (1)
Products and version ranges known to be affected.
also known as (2)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (8)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2026-39940cnnvd
- https://github.com/ChurchCRM/CRM/releasesPatchcnnvd
- https://github.com/ChurchCRM/CRM/security/advisories/GHSA-5g52-rvjf-6wwfcnnvd
- https://github.com/ChurchCRM/CRM/security/advisories/GHSA-v3hj-33xf-qx47cnnvd
- https://github.com/ChurchCRM/CRM/security/advisories/GHSA-5g52-rvjf-6wwfenisa_euvd
- https://github.com/ChurchCRM/CRM/security/advisories/GHSA-v3hj-33xf-qx47enisa_euvd
- https://github.com/ChurchCRM/CRM/security/advisories/GHSA-5g52-rvjf-6wwfnvd
- https://github.com/ChurchCRM/CRM/security/advisories/GHSA-v3hj-33xf-qx47nvd
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