High 8.8Published May 8, 2026

CVE-2026-41486Ray is an AI compute engine.

Updated under an hour ago (2026-10-19 10:30 UTC)

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It affects anyscale ray. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for anyscale ray

Exploited in the last 30 days

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: 8.8 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-94, CWE-502
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

anyscale ray anyscale:ray	2.54.0	NVD

References

https://github.com/ray-project/ray/commit/c02bd31ae31996805868baa446a131a8d304525fpatch
https://github.com/ray-project/ray/pull/62056issue-tracking, patch
https://github.com/ray-project/ray/releases/tag/ray-2.55.0product, release-notes
https://github.com/ray-project/ray/security/advisories/GHSA-mw35-8rx3-xf9rvendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.