Church Admin - Insecure deserialization

1.7

Low

Detected by

Fluid Attacks SAST Scanner

Disclosed by

Andres Roldan

Offensive Team, Fluid Attacks

Summary

Full name

Church Admin 5.0.2 - Insecure deserialization

Code name

State

Private

Release date

Mar 14, 2025

Affected product

Church Admin

Affected version(s)

Version 5.0.2

Vulnerability name

Insecure deserialization

Remotely exploitable

No

CVSS v4.0 vector string

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:U

CVSS v4.0 base score

1.7

Exploit available

No

Description

Church Admin 5.0.2 was found to be vulnerable. Unvalidated user input is used directly in an unserialize function in myapp/includes/settings.php.

Vulnerability

Skims by Fluid Attacks discovered a Insecure deserialization in Church Admin 5.0.2. The following is the output of the tool:

Skims output

 1371 | function church_admin_restrict_access()
 1372 | {
 1373 |
 1374 | echo'<h1 >'.esc_html( __('Restrict access to address list from certain people','church-admin' ) ).'</h2>';
 1375 |
 1376 | if(!empty( $_POST['save-restricted'] ) )
 1377 | {
> 1378 | if(!empty( $_POST['people'] ) )$people=unserialize(church_admin_get_people_id(sanitize_text_field( $_POST['people'] ) )
 1379 | if(!empty( $people) ) {update_option('church-admin-restricted-access',$people);}else{delete_option('church-admin-restr
 1380 | }
 1381 | $restrictedList=get_option('church-admin-restricted-access');
 1382 | $people='';
 1383 | if(!empty( $restrictedList) )$people=church_admin_get_people( $restrictedList);
 1384 | echo'<p>'.esc_html( __('Restrict access to the directory by certain users','church-admin' ) ).'</p>';
 1385 | echo'<form action="""" method=""POST"">';
 1386 | echo'<p>'.church_admin_autocomplete('people','friends','to',$people,FALSE).'</p>';
 1387 | echo'<input type=""hidden"" name=""save-restricted"" value=""1"" /><input type=""submit"" class=""button-primary"" value=""'.esc_ht
  1388 |
  1389 |
  1390 | }
       ^ Col 0

Our security policy

We have reserved the ID CVE-2025-31290 to refer to this issue from now on. Disclosure policy

System Information

  • Product: Church Admin

  • Version: 5.0.2

Mitigation

There is currently no patch available for this vulnerability.

Timeline

Vulnerability discovered

Mar 14, 2025

Vendor contacted

Mar 14, 2025

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Fluid Attacks' solutions enable organizations to identify, prioritize, and remediate vulnerabilities in their software throughout the SDLC. Supported by AI, automated tools, and pentesters, Fluid Attacks accelerates companies' risk exposure mitigation and strengthens their cybersecurity posture.

SOC 2 Type II

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© 2025 Fluid Attacks. We hack your software.

Fluid Attacks' solutions enable organizations to identify, prioritize, and remediate vulnerabilities in their software throughout the SDLC. Supported by AI, automated tools, and pentesters, Fluid Attacks accelerates companies' risk exposure mitigation and strengthens their cybersecurity posture.

SOC 2 Type II

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© 2025 Fluid Attacks. We hack your software.