# CVE-2024-8020: PYSEC-2026-3971 - PyTorch Lightning denial of service vulnerability

Source: https://junglewise.ai/threats/cve-2024-8020-pytorch-lightning-denial-of-service-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-10  
License: CC BY 4.0 with a link back

CVE-2024-8020 · Severity: low · CVSS 3 · Published 2026-09-10

PyTorch Lightning denial of service vulnerability

Technologies: [lightning (PyPI)](https://junglewise.ai/threats/technologies/lightning), [pytorch-lightning (PyPI)](https://junglewise.ai/threats/technologies/pytorch-lightning). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2024-8020 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2024-8020 being exploited in the wild.

**How severe is CVE-2024-8020?** Low severity, with a CVSS score of 3, published 10 September 2026.

**Which products and versions are affected?** lightning (PyPI) ECOSYSTEM:introduced=0,last_affected=2.3.2; pytorch-lightning (PyPI) ECOSYSTEM:introduced=0,last_affected=2.3.2.

**Is there a fix for CVE-2024-8020?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2024-8020?** Check whether you run lightning (PyPI) or pytorch-lightning (PyPI) 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.

## Affected products

- lightning (PyPI) ECOSYSTEM:introduced=0,last_affected=2.3.2
- pytorch-lightning (PyPI) ECOSYSTEM:introduced=0,last_affected=2.3.2

## Identifiers

- CVE-2024-8020
- GHSA-98fp-7v67-4v3q
- PYSEC-2026-1857
- PYSEC-2026-3971

## Related threats

- [PYSEC-2026-3968 - pytorch-lightning is vulnerable to Deserialization of Untrusted Data](https://junglewise.ai/threats/cve-2021-4118-pytorch-lightning-deserialization-of-untrusted-data)
- [PyTorch Lightning code injection via eval()](https://junglewise.ai/threats/cve-2022-0845-code-injection-in-pytorch-lightning)
- [PYSEC-2026-3975 - pytorch-lightning vulnerable to Arbitrary File Write via /v1/runs API endpoint](https://junglewise.ai/threats/cve-2024-5980-pytorch-lightning-vulnerable-to-arbitrary-file-write-via-v1-runs)
- [PYSEC-2026-3974 - Remote code execution in pytorch lightning](https://junglewise.ai/threats/cve-2024-5452-remote-code-execution-in-pytorch-lightning)
- [PyTorch Lightning remote code execution in load_from_checkpoint](https://junglewise.ai/threats/cve-2026-58659-pytorch-lightning-remote-code-execution-in-load-from-checkpoint)