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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-57516 Detail

Description

Ray prior to 2.56.0 contains an unsafe deserialization vulnerability in the WebDataset reader that allows attackers to achieve remote code execution by supplying a malicious tar archive to the read_webdataset() function. The _default_decoder() function in webdataset_datasource.py unconditionally calls pickle.loads() on tar entries with .pkl/.pickle extensions and torch.load() with weights_only=False on .pt/.pth entries, executing arbitrary code inside Ray remote workers on every worker that processes the malicious archive.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  VulnCheck
CVSS-B 8.6 HIGH
Vector:  CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/ray-project/ray/pull/63469 VulnCheck Issue Tracking  Patch 
https://github.com/ray-project/ray/pull/63470 VulnCheck Issue Tracking  Patch 
https://github.com/ray-project/ray/releases/tag/ray-2.56.0 VulnCheck Product  Release Notes 
https://github.com/ray-project/ray/security/advisories/GHSA-hhrp-gw25-jr43 CISA-ADP, VulnCheck Exploit  Mitigation  Patch  Vendor Advisory 
https://www.vulncheck.com/advisories/ray-unsafe-deserialization-rce-via-webdataset-reader VulnCheck Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-502 Deserialization of Untrusted Data VulnCheck  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-57516
NVD Published Date:
07/01/2026
NVD Last Modified:
07/14/2026
Source:
VulnCheck