Is CVE-2023-6021 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2023-6021 being exploited in the wild.

How severe is CVE-2023-6021?

Low severity, with a CVSS score of 3, published 29 June 2026.

Which products and versions are affected?

ray (PyPI) ECOSYSTEM:introduced=0,fixed=2.8.1.

Is there a fix for CVE-2023-6021?

Yes. ray (PyPI): upgrade to 2.8.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2023-6021 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2023-6021?

Check whether you run ray (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.

CVE-2023-6021: PYSEC-2026-515 - Ray Path Traversal vulnerability

CVE-2023-6021 · Severity: low · CVSS 3 · Published 2026-06-29

Ray is a distributed computing engine used for AI and machine learning workloads. An unauthenticated attacker can read arbitrary files on a Ray server through a path traversal vulnerability in the log API endpoint, potentially exposing sensitive configuration files, credentials, or application data without any authentication required.

Technologies: ray (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2023-6021 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2023-6021 being exploited in the wild.
How severe is CVE-2023-6021?: Low severity, with a CVSS score of 3, published 29 June 2026.
Which products and versions are affected?: ray (PyPI) ECOSYSTEM:introduced=0,fixed=2.8.1.
Is there a fix for CVE-2023-6021?: Yes. ray (PyPI): upgrade to 2.8.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2023-6021 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2023-6021?: Check whether you run ray (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.

How to fix

ray (PyPI): upgrade to 2.8.1 or later
```
pip install "ray>=2.8.1"
```

Technical details

The vulnerability is a local file inclusion (LFI) in Ray's log API endpoint caused by improper path validation (CWE-22: Improper Limitation of a Pathname to a Restricted Directory, and CWE-29: Path Traversal). The vulnerable endpoint does not properly sanitize user-supplied file path parameters, allowing attackers to traverse directories using sequences like `../` to access files outside the intended log directory. The attack requires only network access to the Ray API endpoint and no authentication; an attacker can directly read arbitrary files on the host system. The vulnerability affects all versions prior to 2.8.1, which contains the fix.

Affected products

Ray Ray prior to 2.8.1

Identifiers

CVE-2023-6021
GHSA-3pww-qvr8-6mhp
PYSEC-2026-515

Timeline

2023-11-16: disclosed
2023-11-16: patched: Fix released in Ray 2.8.1

References

https://github.com/ray-project/ray

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