How broadly exploitable is this vulnerability?

The vulnerability is broadly exploitable anywhere the affected Saltcorn endpoints are exposed over the network without additional access controls. An attacker does not need valid credentials; they only need to reach the sync endpoints and craft specific requests.

Does an attacker need authenticated access or special roles?

No. The described behavior is triggered by unauthenticated requests to `/sync/offline_changes` and `/sync/upload_finished`. Any party capable of sending HTTP requests to these endpoints can attempt exploitation, subject to any external network protections in place.

What is the safest general fix pattern for developers?

The most robust fix pattern is to strictly decouple client input from filesystem paths. Use canonicalization and enforce that all file operations resolve inside a dedicated storage root directory, reject any traversal or disallowed characters, and map client identifiers to server-controlled names instead of trusting client-supplied paths directly.

Severity:

HIGH RISK

(8.2)

Path Traversal (CWE-22) in Saltcorn Offline Sync Endpoints

CVE-2026-40163

Published:

Apr 10, 2026

Status:

Received

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 / Insecure File System Access

CWE:

CWE-22

Impact:

Arbitrary File Write and Information Disclosure

Severity:

HIGH RISK

(8.2)

CVSS Version:

3.1

Vulnerability Type

Category:

Path Traversal / Insecure File System Access

CWE:

CWE-22

Impact:

Arbitrary File Write and Information Disclosure

Severity:

HIGH RISK

(8.2)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

Path Traversal (CWE-22) in Saltcorn Offline Sync Endpoints

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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