# CVE-2026-54447: garminconnect: Insecure Permission Assignment for Garmin OAuth Token Store

> An attacker on a shared host can read insecurely stored OAuth tokens to access victim's Garmin Connect account data.

- **Severity:** High 8.4 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 14 Sep 2026
- **Updated:** 14 Sep 2026
- **Also known as:** GHSA-wjhr-76vg-2hvc, PYSEC-2026-3467

## What is CVE-2026-54447?

CVE-2026-54447 is a high-severity vulnerability in cyberjunky python-garminconnect, published on 14 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

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.

Weakness: CWE-732 (Incorrect Permission Assignment for Critical Resource)

## Which versions are affected by CVE-2026-54447?

3 open source packages ship an affected version, including garminconnect.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `garminconnect` | PyPI | All versions | 0.3.5 |
| `garminconnect` | PyPI | All versions | 0.3.5 |
| `garminconnect` | PyPI | All versions | 0.3.5 |

## How do I fix CVE-2026-54447?

Upgrade garminconnect to 0.3.5 or later.

## Is CVE-2026-54447 being exploited?

There is no known exploitation of CVE-2026-54447 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-54447 and fix it if it is affected.

What it is: CVE-2026-54447 is a high-severity vulnerability in cyberjunky python-garminconnect, published on 14 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-54447 in the wild and no public exploit code.

Affected packages and fixed versions:
- garminconnect (PyPI): affected all versions; fixed in 0.3.5
- garminconnect (PyPI): affected all versions; fixed in 0.3.5
- garminconnect (PyPI): affected all versions; fixed in 0.3.5

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-54447/ (Markdown: https://insights.sbomify.com/CVE-2026-54447/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-54447
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-54447
- OSV: https://osv.dev/vulnerability/CVE-2026-54447

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-54447/
Summaries are generated and may contain mistakes; the official description above is the record.