CVE-2026-57516 | BDVDB-2026-345049 Detail
AnyscaleRay
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.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.
Weaknesses#
- CWE-502 Deserialization of Untrusted Data
References#
- https://github.com/ray-project/ray/releases/tag/ray-2.56.0
- https://github.com/ray-project/ray/security/advisories/GHSA-hhrp-gw25-jr43
- https://github.com/ray-project/ray/pull/63469
- https://github.com/ray-project/ray/pull/63470
- https://www.vulncheck.com/advisories/ray-unsafe-deserialization-rce-via-webdataset-reader
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.