Vulnerability · Published Feb 21, 2026 · Assigned by GitHub_M
CVE-2026-27482Ray: Dashboard DELETE endpoints allow unauthenticated browser-triggered DoS (Serve shutdown / job deletion)
Medium 5.9
In plain English
A medium-severity security flaw in ray from ray-project. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | ray | 2.54.0 | GHSA-q5fh-2hc8-f6rq |
| PyPI | ray | 2.54.0 | PYSEC-2026-2271 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ray-project | ray | < 2.54.0 |
Weakness: CWE-396 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:H
References
- https://github.com/ray-project/ray/security/advisories/GHSA-q5fh-2hc8-f6rq x_refsource_CONFIRM
- https://github.com/ray-project/ray/pull/60526 x_refsource_MISC
- https://github.com/ray-project/ray/commit/0fda8b824cdc9dc6edd763bb28dfd7d1cc9b02a4 x_refsource_MISC
- https://github.com/ray-project/ray/releases/tag/ray-2.54.0 x_refsource_MISC