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