Apache Fory up to 0.12.2 Python pickle.loads deserialization

Summaryinfo

A vulnerability was found in Apache Fory up to 0.12.2. It has been rated as critical. This affects the function pickle.loads of the component Python. Performing a manipulation results in deserialization. This vulnerability is known as CVE-2025-61622. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in Apache Fory up to 0.12.2. This affects the function pickle.loads of the component Python. The manipulation with an unknown input leads to a deserialization vulnerability. CWE is classifying the issue as CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Deserialization of untrusted data in python in pyfory versions 0.12.0 through 0.12.2, or the legacy pyfury versions from 0.1.0 through 0.10.3: allows arbitrary code execution. An application is vulnerable if it reads pyfory serialized data from untrusted sources. An attacker can craft a data stream that selects pickle-fallback serializer during deserialization, leading to the execution of `pickle.loads`, which is vulnerable to remote code execution. Users are recommended to upgrade to pyfory version 0.12.3 or later, which has removed pickle fallback serializer and thus fixes this issue.

It is possible to read the advisory at lists.apache.org. This vulnerability is uniquely identified as CVE-2025-61622. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/01/2025).

Upgrading to version 0.12.3 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-31867). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• Apache

Name

• Fory

Version

• 0.12.0
• 0.12.1
• 0.12.2

License

• open-source

Website

• Vendor: https://www.apache.org/

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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