# CVE-2025-34351: PYSEC-2026-518 - Ray's New Token Authentication is Disabled By Default

Source: https://junglewise.ai/threats/cve-2025-34351-ray-s-new-token-authentication-is-disabled-by-default  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-11-27  
License: CC BY 4.0 with a link back

CVE-2025-34351 · Severity: medium · CVSS 4 · Published 2025-11-27

Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority. At the request of the MITRE TL-Root and following the CVE Program’s Dispute Policy, it has been determined that this assignment did not identify a valid vulnerability based on the vendor's product security model. Additionally, this assignment conflicts with an existing CVE (CVE-2023-48022).

Technologies: [ray (PyPI)](https://junglewise.ai/threats/technologies/ray). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2025-34351 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-34351 being exploited in the wild.

**How severe is CVE-2025-34351?** Medium severity, with a CVSS score of 4, published 27 November 2025.

**Which products and versions are affected?** ray (PyPI) ECOSYSTEM:introduced=0,last_affected=2.52.0.

**Is there a fix for CVE-2025-34351?** 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-2025-34351?** 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.

## Affected products

- ray (PyPI) ECOSYSTEM:introduced=0,last_affected=2.52.0

## Identifiers

- CVE-2025-34351
- GHSA-gx77-xgc2-4888
- PYSEC-2026-518

## Related threats

- [Ray unsafe deserialization in WebDataset and Parquet readers](https://junglewise.ai/threats/cve-2026-57516-ray-unsafe-deserialization-in-webdataset-and-parquet-readers)
- [PYSEC-2026-515 - Ray Path Traversal vulnerability](https://junglewise.ai/threats/cve-2023-6021-ray-path-traversal-in-log-api)
- [PYSEC-2026-517 - Ray has arbitrary code execution via jobs submission API](https://junglewise.ai/threats/cve-2023-48022-ray-has-arbitrary-code-execution-via-jobs-submission-api)
- [PYSEC-2026-516 - Ray Missing Authorization vulnerability](https://junglewise.ai/threats/cve-2023-6020-ray-missing-authorization-vulnerability)
- [PYSEC-2026-519 - Ray OS Command Injection vulnerability](https://junglewise.ai/threats/cve-2023-6019-ray-os-command-injection-vulnerability)