# CVE-2026-27482: Ray dashboard DELETE endpoints allow unauthenticated browser-triggered DoS (Serve shutdown / job deletion)

Source: https://junglewise.ai/threats/cve-2026-27482-ray-dashboard-delete-endpoints-allow-unauthenticated-browser  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-02-21  
License: CC BY 4.0 with a link back

CVE-2026-27482 · Severity: low · CVSS 3.1 · Published 2026-02-21

Ray is an AI compute engine. In versions 2.53.0 and below, thedashboard HTTP server blocks browser-origin POST/PUT but does not cover DELETE, and key DELETE endpoints are unauthenticated by default. If the dashboard/agent is reachable (e.g., --dashboard-host=0.0.0.0), a web page via DNS rebinding or same-network access can issue DELETE requests that shut down Serve or delete jobs without user interaction. This is a drive-by availability impact. The fix for this vulnerability is to update to Ray 2.54.0 or higher.

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

## Quick answers

**Is CVE-2026-27482 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-27482 being exploited in the wild.

**How severe is CVE-2026-27482?** Low severity, with a CVSS score of 3.1, published 21 February 2026.

**Which products and versions are affected?** ray (PyPI) ECOSYSTEM:introduced=0,fixed=2.54.0.

**Is there a fix for CVE-2026-27482?** Yes. ray (PyPI): upgrade to 2.54.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2026-27482?** 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 2.54.0 or later

  ```sh
  pip install "ray>=2.54.0"
  ```


## Affected products

- ray (PyPI) ECOSYSTEM:introduced=0,fixed=2.54.0

## Identifiers

- CVE-2026-27482
- GHSA-q5fh-2hc8-f6rq
- PYSEC-2026-2271

## 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)