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Description

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.

PUBLISHED Reserved 2026-04-06 | Published 2026-04-07 | Updated 2026-04-08 | Assigner GitHub_M




HIGH: 8.1CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Problem types

CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

< 7.1.0
affected

References

github.com/...RM/CRM/security/advisories/GHSA-rx8c-j7x8-w3hj exploit

github.com/...RM/CRM/security/advisories/GHSA-rx8c-j7x8-w3hj

cve.org (CVE-2026-39344)

nvd.nist.gov (CVE-2026-39344)

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