CVE-2025-62703
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-11-25

Last updated on: 2025-12-30

Assigner: GitHub, Inc.

Description
Fugue is a unified interface for distributed computing that lets users execute Python, Pandas, and SQL code on Spark, Dask, and Ray with minimal rewrites. In version 0.9.2 and prior, there is a remote code execution vulnerability by pickle deserialization via FlaskRPCServer. The Fugue framework implements an RPC server system for distributed computing operations. In the core functionality of the RPC server implementation, I found that the _decode() function in fugue/rpc/flask.py directly uses cloudpickle.loads() to deserialize data without any sanitization. This creates a remote code execution vulnerability when malicious pickle data is processed by the RPC server. The vulnerability exists in the RPC communication mechanism where the client can send arbitrary serialized Python objects that will be deserialized on the server side, allowing attackers to execute arbitrary code on the victim's machine. This issue has been patched via commit 6f25326.
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Meta Information
Published
2025-11-25
Last Modified
2025-12-30
Generated
2026-05-07
AI Q&A
2025-11-26
EPSS Evaluated
2026-05-05
NVD
CVE-2025-62703
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
fugue-project fugue to 0.9.1 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-502 The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
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AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability is a remote code execution issue in the Fugue framework (version 0.9.2 and prior) caused by unsafe deserialization of pickle data in the RPC server. Specifically, the _decode() function uses cloudpickle.loads() without sanitizing the input, allowing an attacker to send malicious serialized Python objects that get deserialized and executed on the server, leading to arbitrary code execution.


How can this vulnerability impact me? :

An attacker exploiting this vulnerability can execute arbitrary code on the server running the Fugue RPC server, potentially leading to full system compromise, data theft, data corruption, or disruption of services.


What immediate steps should I take to mitigate this vulnerability?

Upgrade Fugue to a version later than 0.9.2 where the vulnerability has been patched (after commit 6f25326). Avoid using vulnerable versions of Fugue that deserialize pickle data via FlaskRPCServer without sanitization.


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