djust: Arbitrary absolute-path file read in the find_handlers_for_template MCP tool

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-113731
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-20 22:19:30 UTC
Updated2026-10-20 22:19:30 UTC
Descriptiondjust 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.

Risk And Classification

Primary CVSS: v3.1 3.3 LOW from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Problem Types: CWE-22 | CWE-22 CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary3.3LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
3.1CNADECLARED3.3LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Djust-org Djust affected >= 0.9.0, < 1.0.10 Not specified
CNA Djust-org Djust affected >= 1.1.0, < 1.1.7 Not specified
CNA Djust-org Djust affected >= 1.2.0.dev0, < 1.2.4 Not specified
CNA Djust-org Djust affected >= 1.3.0.dev0, < 1.3.0rc8 Not specified

References

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