AI and data stack advisories

Severe, 6 weeks1498Projects326

1498 severe, 6 weeks · 326 projects

RayGHSA-gx77-xgc2-4888

Ray's New Token Authentication is Disabled By Default

Ray

CVE-2025-34351 · Published Nov 27, 2025 · updated Sep 10, 2026

Critical
No fix yet
GitHub advisory

Anyscale Ray 2.52.0 contains an insecure default configuration in which token-based authentication for Ray management interfaces (including the dashboard and Jobs API) is disabled unless explicitly enabled by setting RAY_AUTH_MODE=token. In the default unauthenticated state, a remote attacker with network access to these interfaces can submit jobs and execute arbitrary code on the Ray cluster. NOTE: The vendor plans to enable token authentication by default in a future release. They recommend enabling token authentication to protect your cluster from unauthorized access.

Affected versions

PackageAffectedFixed in
ray
PyPI
<= 2.52.0No fix yet
Details and references

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