{"id":"CVE-2026-108258","published":"2026-10-09T21:17:03.853","lastModified":"2026-10-13T19:18:04.443","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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-22"],"vendors":[],"products":[],"references":[{"url":"https://github.com/posit-dev/py-shiny/commit/1d8ecb46cbc9621b7dc8812111d26692e086b376","tags":[]},{"url":"https://github.com/posit-dev/py-shiny/releases/tag/v1.6.4","tags":[]},{"url":"https://github.com/posit-dev/py-shiny/security/advisories/GHSA-47c3-hpmg-7j6p","tags":[]}],"exploitRefs":[{"url":"https://github.com/posit-dev/py-shiny/commit/1d8ecb46cbc9621b7dc8812111d26692e086b376","tags":[]},{"url":"https://github.com/posit-dev/py-shiny/releases/tag/v1.6.4","tags":[]},{"url":"https://github.com/posit-dev/py-shiny/security/advisories/GHSA-47c3-hpmg-7j6p","tags":[]}],"hasPoc":true,"ai":null}