Is this vulnerability remotely exploitable over the internet?

Yes, but only by authenticated users with administrative access to the ChurchCRM instance. If such access is reachable over the internet, an attacker can exploit the vulnerability remotely by abusing the backup restore interface.

What level of access is required to exploit this issue?

Exploitation requires valid administrative credentials or another account with equivalent permissions to access and use the backup restore functionality. Anonymous or low-privilege users cannot directly trigger the vulnerable code path under normal configurations.

What is the safest general fix pattern for developers?

The safest fix is to completely decouple user input from filesystem paths: generate server-side filenames, canonicalize and validate any paths against a strict allowlist, and ensure upload directories cannot influence server configuration or code execution behavior. Additionally, enforce extension and content checks so only benign backup formats are accepted.

Severity:

CRITICAL RISK

(9.1)

Path Traversal & Unrestricted File Upload (CWE-22/CWE-434) in ChurchCRM Backup Restore

CVE-2026-35573

Published:

Apr 7, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI Handler setAccessDeviceCfg

Remote Code Execution on the Router

April 12, 2026

CWE-77;CWE-78

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI setLedCfg Handler

Remote Code Execution on the Router

April 12, 2026

Vulnerability Type

Category:

Path Traversal and Unrestricted File Upload

CWE:

CWE-22;CWE-434

Impact:

Remote Code Execution via Web Server Configuration Manipulation

Severity:

CRITICAL RISK

(9.1)

CVSS Version:

3.1

Vulnerability Type

Category:

Path Traversal and Unrestricted File Upload

CWE:

CWE-22;CWE-434

Impact:

Remote Code Execution via Web Server Configuration Manipulation

Severity:

CRITICAL RISK

(9.1)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

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Ask AI for summary of CodeAnt

Path Traversal & Unrestricted File Upload (CWE-22/CWE-434) in ChurchCRM Backup Restore

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI Handler setAccessDeviceCfg

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI setLedCfg Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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