Junglewise Threat Intelligence

CVE-2026-27482: PYSEC-2026-2271 - 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

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

Technologies: ray (PyPI). Vendors: PyPI.

Executive brief

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.

Affected products

  • PyPI ray

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