Saltcorn up to 1.4.4/1.5.4/1.6.0-beta.3 JSON File Parser /sync/offline_changes path traversal

Summaryinfo

A vulnerability categorized as critical has been discovered in Saltcorn up to 1.4.4/1.5.4/1.6.0-beta.3. This impacts an unknown function of the file /sync/offline_changes of the component JSON File Parser. Such manipulation leads to path traversal. This vulnerability is uniquely identified as CVE-2026-40163. The attack can be launched remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Saltcorn up to 1.4.4/1.5.4/1.6.0-beta.3 and classified as critical. Affected by this issue is an unknown functionality of the file /sync/offline_changes of the component JSON File Parser. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Saltcorn is an extensible, open source, no-code database application builder. Prior to 1.4.5, 1.5.5, and 1.6.0-beta.4, the POST /sync/offline_changes endpoint allows an unauthenticated attacker to create arbitrary directories and write a changes.json file with attacker-controlled JSON content anywhere on the server filesystem. The GET /sync/upload_finished endpoint allows an unauthenticated attacker to list arbitrary directory contents and read specific JSON files. This vulnerability is fixed in 1.4.5, 1.5.5, and 1.6.0-beta.4.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-40163 since 04/09/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

Upgrading to version 1.4.5, 1.5.5 or 1.6.0-beta.4 eliminates this vulnerability.

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Productinfo

Name

• Saltcorn

Version

• 1.4.0
• 1.4.1
• 1.4.2
• 1.4.3
• 1.4.4
• 1.5.0
• 1.5.1
• 1.5.2
• 1.5.3
• 1.5.4
• 1.6.0-beta.0
• 1.6.0-beta.1
• 1.6.0-beta.2
• 1.6.0-beta.3

Website

• Product: https://github.com/saltcorn/saltcorn/

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