GHSA-HHRP-GW25-JR43 Ray: Arbitrary code execution via ray.data.read_webdataset default decoder: pickle.loads(value) and torch.load(weights_only=False)

Summary ray.data.readwebdatasetpaths=... is a @PublicAPIstability="alpha" reader for WebDataset-format TAR files. Its default decoder=True invokes defaultdecoder on every sample's keys, which routes file extension to a decoder by extension. Two of those branches deserialize attacker-controlled...

PYSEC-2026-2273

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 readwebdataset function. The defaultdecoder function in webdatasetdatasource.py unconditionally calls...

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 readwebdataset function. The defaultdecoder function in webdatasetdatasource.py unconditionally calls...

SUSE CVE-2026-39324

Rack::Session is a session management implementation for Rack. From 2.0.0 to before 2.1.2, Rack::Session::Cookie incorrectly handles decryption failures when configured with secrets:. If cookie decryption fails, the implementation falls back to a default decoder instead of rejecting the cookie...

Rack::Session::Cookie secrets: decrypt failure fallback enables secretless session forgery and Marshal deserialization

Rack::Session::Cookie incorrectly handles decryption failures when configured with secrets:. If cookie decryption fails, the implementation falls back to a default decoder instead of rejecting the cookie. This allows an unauthenticated attacker to supply a crafted session cookie that is accepted ...