Deserialization of Untrusted Data Affecting ms-swift package, versions [,3.7.0)
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- published7 Aug 2025
- disclosed31 Jul 2025
- creditTencentAISec
Introduced: 31 Jul 2025
New CVE NOT AVAILABLE CWE-502 (opens in a new tab)How to fix?
Upgrade ms-swift to version 3.7.0 or higher.
Overview
ms-swift is a Swift: Scalable lightWeight Infrastructure for Fine-Tuning
Affected versions of this package are vulnerable to Deserialization of Untrusted Data via the torch.load function. An attacker can execute arbitrary commands by uploading a maliciously crafted adapter model file that triggers unsafe deserialization when loaded. This is only exploitable if the environment uses a torch version lower than 2.6.0 while the application accepts torch versions greater than or equal to 2.0.
Details
Serialization is a process of converting an object into a sequence of bytes which can be persisted to a disk or database or can be sent through streams. The reverse process of creating object from sequence of bytes is called deserialization. Serialization is commonly used for communication (sharing objects between multiple hosts) and persistence (store the object state in a file or a database). It is an integral part of popular protocols like Remote Method Invocation (RMI), Java Management Extension (JMX), Java Messaging System (JMS), Action Message Format (AMF), Java Server Faces (JSF) ViewState, etc.
Deserialization of untrusted data (CWE-502) is when the application deserializes untrusted data without sufficiently verifying that the resulting data will be valid, thus allowing the attacker to control the state or the flow of the execution.