CVE detail
CVE-2026-57516
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.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 17.9 · diversity 6.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
5 source links · newest first
- https://www.vulncheck.com/advisories/ray-unsafe-deserialization-rce-via-webdataset-readerwww.vulncheck.com
No excerpt available.
Exploitwww.vulncheck.comJul 1, 2026, 5:16 PM No excerpt available.
Exploitgithub.comJul 1, 2026, 5:16 PMNo excerpt available.
Exploitgithub.comJul 1, 2026, 5:16 PMNo excerpt available.
Exploitgithub.comJul 1, 2026, 5:16 PMNo excerpt available.
Exploitgithub.comJul 1, 2026, 5:16 PM
Exploit code
Public exploit repository references
Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.
0 repository references · best confidence N/A · max 0 stars
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