djust-org djust up to 1.0.9/1.1.6/1.2.3/1.3.0rc7 MCP Tool server.py find_handlers_for_template template_path path traversal

Summaryinfo

A vulnerability classified as problematic was found in djust-org djust up to 1.0.9/1.1.6/1.2.3/1.3.0rc7. This affects the function find_handlers_for_template of the file python/djust/mcp/server.py of the component MCP Tool. The manipulation of the argument template_path results in path traversal. This vulnerability is known as CVE-2026-113731. Attacking locally is a requirement. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in djust-org djust up to 1.0.9/1.1.6/1.2.3/1.3.0rc7. It has been classified as problematic. Affected is the function find_handlers_for_template of the file python/djust/mcp/server.py of the component MCP Tool. The manipulation of the argument template_path with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality. CVE summarizes:

djust provides Phoenix LiveView-style reactive server-side rendering for Django with Rust-powered performance. From 0.9.0 until 1.0.10, 1.1.7, 1.2.4, and 1.3.0rc8, the find_handlers_for_template MCP tool in python/djust/mcp/server.py accepts an existing absolute template_path and reads it without restricting the resolved path to the project or configured template directories. A local MCP client can use the tool as a file existence and readability oracle and can obtain substrings that match the tool's dj-click, dj-submit, dj-change, dj-input, dj-keydown, or dj-keyup attribute pattern from files readable by the djust process. The maintainer assessment states that the MCP server communicates over local stdio as the same operating-system user and has no network listener, and the tool does not return arbitrary raw file contents. This issue is fixed in versions 1.0.10, 1.1.7, 1.2.4, and 1.3.0rc8.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-113731 since 10/20/2026. The exploitability is told to be easy. Local access is required to approach this attack. 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 1.0.10, 1.1.7, 1.2.4 or 1.3.0rc8 eliminates this vulnerability.

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Productinfo

Vendor

• djust-org

Name

• djust

Version

• 1.0.0
• 1.0.1
• 1.0.2
• 1.0.3
• 1.0.4
• 1.0.5
• 1.0.6
• 1.0.7
• 1.0.8
• 1.0.9
• 1.1.0
• 1.1.1
• 1.1.2
• 1.1.3
• 1.1.4
• 1.1.5
• 1.1.6
• 1.2.0
• 1.2.1
• 1.2.2
• 1.2.3
• 1.3.0rc1
• 1.3.0rc2
• 1.3.0rc3
• 1.3.0rc4
• 1.3.0rc5
• 1.3.0rc6
• 1.3.0rc7

Website

• Product: https://github.com/djust-org/djust/

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