PT-2026-33543 · Churchcrm · Churchcrm

CVE-2026-40593 · Published 2026-04-18 · Updated 2026-04-18

Positive Technologies (AI Summary)

CVSS v3.1

4.8

Medium

Base vector

AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions ChurchCRM versions prior to 7.2.0

Description The User Editor (UserEditor.php) renders stored usernames directly into an HTML input value attribute without applying htmlspecialchars(), a function used to convert special characters to HTML entities to prevent the browser from interpreting them as code. An administrator can save a username containing HTML attribute-breaking characters and event handlers, which execute in the browser of any administrator who subsequently views that user's editor page, resulting in stored Cross-Site Scripting (XSS), a flaw where malicious scripts are permanently stored on the target server.

Recommendations Update to version 7.2.0.

Exploit

Fix

XSS

Improper Encoding or Escaping of Output

Weakness Enumeration

CWE-79

CWE-116

Related Identifiers

CVE-2026-40593

GHSA-7H46-9F64-P49Q

Affected Products

Churchcrm

References · 5

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40593.json · Exploit
• https://osv.dev/vulnerability/CVE-2026-40593 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-40593 · Security Note
• https://github.com/ChurchCRM/CRM/security/advisories/GHSA-7h46-9f64-p49q · Note
• https://twitter.com/CVEnew/status/2045467342637854722 · Twitter Post