Deserialization of Untrusted Data Affecting pipecat-ai package, versions [,0.0.94)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published10 May 2026
- disclosed23 Apr 2026
- creditChenpinji
Introduced: 23 Apr 2026
NewCVE-2025-62373 (opens in a new tab)How to fix?
Upgrade pipecat-ai to version 0.0.94 or higher.
Overview
pipecat-ai is an An open source framework for voice (and multimodal) assistants
Affected versions of this package are vulnerable to Deserialization of Untrusted Data in the deserialize function of the LivekitFrameSerializer class, which uses pickle.loads on untrusted data received from WebSocket clients. An attacker can execute arbitrary code on the server by sending a specially crafted pickle payload over the network. This is only exploitable if the application is explicitly configured to use the LivekitFrameSerializer and the WebSocket server is accessible to untrusted clients.
Workaround
This vulnerability can be mitigated by replacing the vulnerable serializer with a safer alternative such as LiveKitTransport, using secure serialization formats like JSON or Protocol Buffers, restricting network exposure by binding the service to localhost, and implementing authentication on the WebSocket connection.
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.