What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-02-21 · updated 2026-06-17
• Weakness: CWE-396

Description

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

• ray-project ray: before 2.54.0 — fixed in 2.54.0

How to fix

Upgrade to a fixed version: ray-project ray 2.54.0. Check the vendor advisory for mitigations.

References

• https://github.com/ray-project/ray/commit/0fda8b824cdc9dc6edd763bb28dfd7d1cc9b02a4
• https://github.com/ray-project/ray/pull/60526
• https://github.com/ray-project/ray/releases/tag/ray-2.54.0
• https://github.com/ray-project/ray/security/advisories/GHSA-q5fh-2hc8-f6rq

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