CVE-2026-108258

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/posit-dev/py-shiny/commit/1d8ecb46cbc9621b7dc8812111d26692e086b376
https://github.com/posit-dev/py-shiny/releases/tag/v1.6.4
https://github.com/posit-dev/py-shiny/security/advisories/GHSA-47c3-hpmg-7j6p

Configurations

No configuration.

History

09 Oct 2026, 21:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-09 21:17

Updated : 2026-10-16 17:25

NVD link : CVE-2026-108258

Mitre link : CVE-2026-108258

CVE.ORG link : CVE-2026-108258

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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