{"cve":"CVE-2026-108258","nvd":{"published":"2026-10-09T21:17:03.853","modified":"2026-10-16T17:25:57.940","status":"Awaiting Analysis","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.","cvss_v4":{"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","score":6.9},"cvss_v3":null,"cwes":["CWE-22"],"references":["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"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:58:01.639778232+00:00"},"epss":{"cve":"CVE-2026-108258","score":0.00358,"percentile":0.29245,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-47c3-hpmg-7j6p","url":"https://osv.dev/vulnerability/GHSA-47c3-hpmg-7j6p","summary":"Shiny for Python has path traversal in bookmark restore","modified":"2026-10-15T14:56:16.567885576Z","packages":[{"ecosystem":"PyPI","name":"shiny","purl":"pkg:pypi/shiny","ranges":[">=1.4.0 <1.6.4"],"fixed":["1.6.4"]}]},{"id":"PYSEC-2026-4300","url":"https://osv.dev/vulnerability/PYSEC-2026-4300","summary":"Shiny for Python has path traversal in bookmark restore","modified":"2026-10-15T14:45:13.471383484Z","packages":[{"ecosystem":"PyPI","name":"shiny","purl":"pkg:pypi/shiny","ranges":[">=1.4.0 <1.6.4"],"fixed":["1.6.4"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}