CVE-2026-108258

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Source
https://cve.org/CVERecord?id=CVE-2026-108258
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-108258.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-108258
Aliases
Published
2026-10-09T20:34:39Z
Modified
2026-10-28T02:31:01Z
Severity
  • 6.9 (Medium) CVSS_V4 - 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 CVSS Calculator
Summary
Shiny for Python - Path traversal in bookmark restore
Details

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.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-22"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108258.json"
}
References

Affected packages

Git / github.com/posit-dev/py-shiny

Affected ranges

Type
GIT
Repo
https://github.com/posit-dev/py-shiny
Events
Introduced
571509177f10c18158e082db8e04a627d5d53b31
Fixed
31ea9129296267d5df17638b3ffcec9635048c82
Fixed
1d8ecb46cbc9621b7dc8812111d26692e086b376
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "1.4.0"
                },
                {
                    "fixed":  "1.6.4"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "1d8ecb46cbc9621b7dc8812111d26692e086b376"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v1.6.4",
            "range":  [
                {
                    "fixed":  "31ea9129296267d5df17638b3ffcec9635048c82"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-108258.json"