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CVE-2026-54447

garminconnect: Insecure Permission Assignment for Garmin OAuth Token Store

CVSS 3.1 8.4 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-54447

Published

garminconnect is a Python 3 API wrapper for Garmin Connect that retrieves statistics and manages activities. Prior to 0.3.5, garminconnect/client.py Client.dump creates the OAuth token directory and garmin_tokens.json without explicit owner-only modes, so a permissive umask such as 022 can leave the directory mode at 0755 and the token file mode at 0644. garmin_tokens.json contains di_refresh_token, and another unprivileged user on a shared Linux or macOS host can read the token and obtain persistent access to the victim's Garmin Connect account, including health, fitness, activity, and device data. The Garmin.login tokenstore path is affected, and a pre-existing loosely permissioned token file remains exposed until rewritten or manually restricted. This issue is fixed in version 0.3.5.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-54447

Published

python-garminconnect

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "cyberjunky",
                    "product": "python-garminconnect",
                    "versions": [
                        {
                            "version": "< 0.3.5",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON