# CVE-2024-40624: TorrentPier insecure deserialization in get_tracks function

Source: https://junglewise.ai/threats/cve-2024-40624-torrentpier-insecure-deserialization-in-get-tracks-function  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2024-07-15. Updated: 2026-05-13  
License: CC BY 4.0 with a link back

CVE-2024-40624 · Severity: critical · CVSS 9.8 · Published 2024-07-15

TorrentPier is an open-source BitTorrent tracker engine. A security vulnerability in how the software handles browser cookies allows an attacker to execute malicious code on the server. This could lead to a complete takeover of the website, theft of user data, or disruption of service.

Technologies: [torrentpier/torrentpier (Packagist)](https://junglewise.ai/threats/technologies/torrentpier-torrentpier), [TorrentPier](https://junglewise.ai/threats/technologies/torrentpier). Vendors: [Packagist](https://junglewise.ai/threats/vendors/packagist), [TorrentPier](https://junglewise.ai/threats/vendors/torrentpier).

## Quick answers

**Is CVE-2024-40624 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2024-40624 being exploited in the wild.

**How severe is CVE-2024-40624?** Critical severity, with a CVSS score of 9.8, published 15 July 2024.

**Which products and versions are affected?** torrentpier/torrentpier (Packagist) <= 2.4.3, ECOSYSTEM:introduced=0,fixed=2.4.4; TorrentPier <= 2.4.3.

**Is there a fix for CVE-2024-40624?** Yes. torrentpier/torrentpier (Packagist): upgrade to 2.4.4 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2024-40624 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2024-40624?** Check whether you run torrentpier/torrentpier (Packagist) or TorrentPier at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- torrentpier/torrentpier (Packagist): upgrade to 2.4.4 or later

  ```sh
  composer require torrentpier/torrentpier:^2.4.4
  ```


## Technical details

A deserialization of untrusted data vulnerability exists in TorrentPier versions 2.4.3 and earlier. The `get_tracks()` function in `library/includes/functions.php` uses the native PHP `unserialize()` function on the contents of the `bb_t` cookie without proper validation. An unauthenticated remote attacker can exploit this by providing a specially crafted cookie containing a PHP gadget chain (such as Guzzle/FW1). Successful exploitation allows the attacker to perform arbitrary file writes and execute arbitrary PHP code on the underlying server. The issue is addressed in version 2.4.4.

## Affected products

- TorrentPier TorrentPier <= 2.4.3

## Identifiers

- CVE-2024-40624
- GHSA-fg86-4c2r-7wxw

## Timeline

- 2024-07-13: disclosed
- 2024-07-15: advisory: GHSA-fg86-4c2r-7wxw published
- 2024-07-15: patched

## References

- [https://api.github.com/users/swapgs](https://api.github.com/users/swapgs)
- [https://github.com/swapgs](https://github.com/swapgs)
- [https://api.github.com/users/swapgs/gists%7B/gist_id%7D](https://api.github.com/users/swapgs/gists%7B/gist_id%7D)
- [https://api.github.com/users/swapgs/repos](https://api.github.com/users/swapgs/repos)
- [https://avatars.githubusercontent.com/u/37152314?v=4](https://avatars.githubusercontent.com/u/37152314?v=4)
- [https://api.github.com/users/swapgs/events%7B/privacy%7D](https://api.github.com/users/swapgs/events%7B/privacy%7D)

## Related threats

- [TorrentPier PHP object injection in multiple components](https://junglewise.ai/threats/torrentpier-php-object-injection-in-multiple-components-196a1829)
- [TorrentPier SQL injection in moderator control panel topic_id](https://junglewise.ai/threats/cve-2025-64519-torrentpier-sql-injection-in-moderator-control-panel-topic-id)
- [Deserialization of Untrusted Data in Torrentpier](https://junglewise.ai/threats/cve-2024-1651-deserialization-of-untrusted-data-in-torrentpier)