ChurchCRM up to 7.1.x User Editor UserEditor.php htmlspecialchars cross site scripting

Summaryinfo

A vulnerability marked as problematic has been reported in ChurchCRM up to 7.1.x. The impacted element is the function htmlspecialchars of the file UserEditor.php of the component User Editor. The manipulation leads to cross site scripting. This vulnerability is referenced as CVE-2026-40593. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in ChurchCRM up to 7.1.x. It has been rated as problematic. This issue affects the function htmlspecialchars of the file UserEditor.php of the component User Editor. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

ChurchCRM is an open-source church management system. In versions prior to 7.2.0, the User Editor (UserEditor.php) renders stored usernames directly into an HTML input value attribute without applying htmlspecialchars(). 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 XSS. This issue has been fixed in version 7.2.0.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-40593 since 04/14/2026. The exploitation is known to be easy. The attack may be initiated remotely. The exploitation requires an enhanced level of successful authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

By approaching the search of inurl:UserEditor.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 7.2.0 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• ChurchCRM

Version

• 7.0
• 7.1

License

• open-source

CPE 2.3info

• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion