Shiny for Python is a framework for building interactive web applications in Python. From 1.4.0 until 1.6.4, bookmark restore accepts a client-supplied state_id and joins it into the server-side shiny_bookmarks directory without validating that it is a single safe path segment. An unauthenticated request can use parent-directory segments or an absolute path to make the server open input.json and values.json outside the bookmark store, even when bookmark_store is set to disable. In applications configured with bookmark_store set to server and using ui.input_file(), the restore handler can additionally copy and expose an attacker-selected file from an attacker-selected directory. This issue is fixed in version 1.6.4.
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-47c3-hpmg-7j6p Shiny for Python has path traversal in bookmark restore
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 09 Oct 2026 20:45:00 +0000

Type Values Removed Values Added
Description Shiny for Python is a framework for building interactive web applications in Python. From 1.4.0 until 1.6.4, bookmark restore accepts a client-supplied state_id and joins it into the server-side shiny_bookmarks directory without validating that it is a single safe path segment. An unauthenticated request can use parent-directory segments or an absolute path to make the server open input.json and values.json outside the bookmark store, even when bookmark_store is set to disable. In applications configured with bookmark_store set to server and using ui.input_file(), the restore handler can additionally copy and expose an attacker-selected file from an attacker-selected directory. This issue is fixed in version 1.6.4.
Title Shiny for Python - Path traversal in bookmark restore
Weaknesses CWE-22
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-09T20:34:39.539Z

Reserved: 2026-10-09T17:33:15.409Z

Link: CVE-2026-108258

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-09T21:17:03.853

Modified: 2026-10-09T21:17:03.853

Link: CVE-2026-108258

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-09T21:30:12Z

Weaknesses