XSS in Churchcrm
CVE-2026-39328
ChurchCRM is an open-source church management system. Prior to 7.1.0, a stored cross-site scripting vulnerability exists in ChurchCRM's person profile editing functionality. Non-administrative users who have the EditSelf permission can inject malicious JavaScript into their Facebook, LinkedIn, and X profile fields. Due to a 50-character field limit, the payload is distributed across all three fields and chains their onfocus event handlers to execute in sequence. When any user, including administrators, views the attacker's profile, their session cookies are exfiltrated to a remote server. This vulnerability is fixed in 7.1.0.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.002 (10.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.9 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L.
Affected products
- Churchcrm
- Churchcrm Crm — versions < 7.1.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2026-39328?
- CVE-2026-39328 is a high-severity vulnerability in Churchcrm, classified under Cross-site Scripting. CVSS score: 8.9/10. Published 2026-04-07.
- How severe is CVE-2026-39328?
- High severity. CVSS v3 base score is 8.9 out of 10.