CVE-2026-39344: high-severity vulnerability in ChurchCRM CRM
Reflected XSS the login page through the 'username' parameter
Published · Updated
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.1epss 0.4%
exploitation probability
0.4%top 68% of all CVEs
observed exploitation
nono source reports it
ChurchCRM is an open-source church management system. Prior to 7.1.0, there is a Reflected Cross-Site Scripting (XSS) vulnerability on the login page, which is caused by the lack of sanitization or encoding of the username parameter received from the URL. The username parameter value is directly displayed in the login page input element without filter, allowing attackers to insert malicious JavaScript scripts. If successful, script can be executed on the client side, potentially stealing sensitive data such as session cookies or replacing the display to show the attacker's login form. This vulnerability is fixed in 7.1.0.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Affected products
ChurchCRM · CRMRelated CVEs — ChurchCRM CRM
In the same product, most dangerous first.
CVE-2025-62521CRITICALChurchCRM has unauthenticated RCE in its Install WizardEPSS 4.5%CVE-2024-39304HIGHChurchCRM SQL Injection VulnerabilityEPSS 3.0%CVE-2026-39339CRITICALChurchCRM has an API Authentication BypassEPSS 1.8%CVE-2025-68109CRITICALChurchCRM vulnerable to RCE with database restore functionalityEPSS 1.5%CVE-2026-39337CRITICALChurchCRM Affected by Unauthenticated RCE in Install WizardEPSS 1.1%CVE-2026-42288CRITICALChurchCRM: Incomplete fix for CVE-2026-39337: Unauthenticated RCE in Setup Wizard via unsanitized DB_PASSWORDEPSS 1.0%