GHSA-538v-3wq9-4h3r
Apache Pyfory python is vulnerable to deserialization of untrusted data
Packages
Details
As written in the advisory (Markdown source, shown as plain text).
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.
References
External links from the advisory. They lead to third-party sites.
- https://nvd.nist.gov/vuln/detail/CVE-2025-61622
- https://github.com/apache/fory/pull/2629
- https://github.com/apache/fory/commit/379b948ecae5c3b849e5bdb3997978c9a163e40b
- https://github.com/apache/fory
- https://github.com/apache/fory/releases/tag/v0.12.3
- https://lists.apache.org/thread/vfn9hp9qt06db5yo1gmj3l114o3o2csd
- http://www.openwall.com/lists/oss-security/2025/09/29/3