← Vulnerability feed

Vulnerability record · CVE-2026-41486 · published 8 May 2026

CVE-2026-41486: Anyscale ray code injection vulnerability

Anyscale · Ray

Ray is an AI compute engine. From version 2.54.0 to before version 2.55.0, 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. This issue has been patched in version 2.55.0.

8.9 CVSS 4.0 High EPSS 0.70% · top 48.6% CWE-94 · Code injectionCWE-502 · Deserialization of untrusted data
8.9CVSS 4.0 base score
0.70%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

Ray is an AI compute engine. From version 2.54.0 to before version 2.55.0, 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. This issue has been patched in version 2.55.0.

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/ray-project/ray/commit/c02bd31ae31996805868baa446a131a8d304525f Patch
https://github.com/ray-project/ray/pull/62056 Issue TrackingPatch
https://github.com/ray-project/ray/releases/tag/ray-2.55.0 ProductRelease Notes
https://github.com/ray-project/ray/security/advisories/GHSA-mw35-8rx3-xf9r Vendor Advisory

Track CVE-2026-41486 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.4CVE-2025-62593Ray browser-based RCE via insufficient User-Agent guardRay, an AI compute engine, contains a critical remote code execution flaw before version 2.52.0. Its defense against browser-based attacks relies on …KEVEPSS 62%analysed9.8CVE-2023-48022Anyscale Ray job submission API allows unauthenticated remote code executionAnyscale Ray versions 2.6.3 and 2.8.0 expose a job submission API that lets a remote attacker execute arbitrary code. The vendor disputes the report,…EPSS 84%analysed9.1CVE-2023-48023Anyscale ray server-side request forgery (ssrf) vulnerabilityAnyscale Ray 2.6.3 and 2.8.0 allows /log_proxy SSRF. NOTE: the vendor's position is that this report is irrelevant because Ray, as stated in its docu…EPSS 35%8.7CVE-2026-32981Anyscale ray path traversal vulnerabilityA path traversal vulnerability was identified in Ray Dashboard (default port 8265) in Ray versions prior to 2.8.1. Due to improper validation and san…EPSS 1.0%8.6CVE-2026-57516Anyscale ray deserialization of untrusted data vulnerabilityRay prior to 2.56.0 contains an unsafe deserialization vulnerability in the WebDataset reader that allows attackers to achieve remote code execution …EPSS 0.86%6.5CVE-2026-27482Anyscale ray vulnerabilityRay 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…EPSS 0.40%8.8CVE-2026-65660Microsoft sharepoint server code injection vulnerabilityImproper control of generation of code ('code injection') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.KEVEPSS 2.1%9.8CVE-2026-60004Gitea diffpatch API code injection enables remote code executionGitea before 1.27.1 allows remote code execution through the diffpatch API by way of Git hook installation. The flaw is a code injection issue (CWE-9…KEVEPSS 24%analysed

Source: NIST National Vulnerability Database (record CVE-2026-41486), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.