Advisories for Pypi/Ray package

2026

Ray: Remote Code Execution via Parquet Arrow Extension Type Deserialization

Ray Data registers custom Arrow extension types (ray.data.arrow_tensor, ray.data.arrow_tensor_v2, ray.data.arrow_variable_shaped_tensor) globally in PyArrow. When PyArrow reads a Parquet file containing one of these extension types, it calls arrow_ext_deserialize on the field's metadata bytes. Ray's implementation passes these bytes directly to cloudpickle.loads(), achieving arbitrary code execution during schema parsing, before any row data is read. In May 2024, Ray fixed a related vulnerability in PyExtensionType-based extension types (issue #41314, PR #45084). …

Ray dashboard DELETE endpoints allow unauthenticated browser-triggered DoS (Serve shutdown / job deletion)

Ray’s dashboard 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.

2025

Ray's New Token Authentication is Disabled By Default

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 …

Ray is vulnerable to Critical RCE via Safari & Firefox Browsers through DNS Rebinding Attack

Developers working with Ray as a development tool can be exploited via a critical RCE vulnerability exploitable via Firefox and Safari. Due to the longstanding decision by the Ray Development team to not implement any sort of authentication on critical endpoints, like the /api/jobs & /api/job_agent/jobs/ has once again led to a severe vulnerability that allows attackers to execute arbitrary code against Ray. This time in a development context via …

ray vulnerable to Insertion of Sensitive Information into Log File

Versions of the package ray before 2.43.0 are vulnerable to Insertion of Sensitive Information into Log File where the redis password is being logged in the standard logging. If the redis password is passed as an argument, it will be logged and could potentially leak the password. This is only exploitable if: Logging is enabled; Redis is using password authentication; Those logs are accessible to an attacker, who can reach …

Withdrawn Advisory: Command injection in Ray

Withdrawn Advisory This advisory is a duplicate of GHSA-6wgj-66m2-xxp2 / CVE-2023-48022. Original Description An issue in Anyscale Inc Ray between v.2.9.3 and v.2.40.0 allows a remote attacker to execute arbitrary code via a crafted script.

2023

Ray has arbitrary code execution via jobs submission API

Anyscale Ray allows a remote attacker to execute arbitrary code via the job submission API. NOTE: the vendor's position is that this report is irrelevant because Ray, as stated in its documentation, is not intended for use outside of a strictly controlled network environment.