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CVE-2026-113731

CVE-2026-113731 · djust: Arbitrary absolute-path file read in the find_handlers_for_template MCP tool

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 3.3 · Low · EPSS 0.2% · Public exploit · Fix available

Published
Updated

Stack: python

Affected products and versions

  • djust

    Versions
    • >= 0.9.0, < 1.0.10: Affected
    • >= 1.1.0, < 1.1.7: Affected
    • >= 1.2.0.dev0, < 1.2.4: Affected
    • >= 1.3.0.dev0, < 1.3.0rc8: Affected

    No fix published

  • djust PyPI

    Versions
    • 0.9.0
    • 0.9.1
    • 0.9.2
    • 0.9.4
    • 0.9.5
    • 0.9.6
    • 0.9.7
    • 1.0.0
    • 1.0.0rc11
    • 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
    Affected ranges
    • ECOSYSTEM: ≥ 0.9.0, < 1.0.10

    Update to 1.0.10

  • djust PyPI

    Versions
    • 1.1.0
    • 1.1.1
    • 1.1.2
    • 1.1.3
    • 1.1.4
    • 1.1.5
    • 1.1.6
    Affected ranges
    • ECOSYSTEM: ≥ 1.1.0, < 1.1.7

    Update to 1.1.7

  • djust PyPI

    Versions
    • 1.2.0
    • 1.2.1
    • 1.2.1rc1
    • 1.2.1rc2
    • 1.2.2
    • 1.2.3
    Affected ranges
    • ECOSYSTEM: ≥ 1.2.0.dev0, < 1.2.4

    Update to 1.2.4

  • djust PyPI

    Versions
    • 1.3.0rc4
    • 1.3.0rc5
    • 1.3.0rc6
    • 1.3.0rc7
    Affected ranges
    • ECOSYSTEM: ≥ 1.3.0.dev0, < 1.3.0rc8

    Update to 1.3.0rc8

Original sources

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