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CVE

CVE-2025-61622

Apache Pyfory python is vulnerable to deserialization of untrusted data
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CVE

CVE-2025-61622

Apache Pyfory python is vulnerable to deserialization of untrusted data

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
9.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Related Resources

No items found.

References

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, https://pypi.org/project/pyfory, https://github.com/advisories/GHSA-538v-3wq9-4h3r

Severity

9.8

CVSS Score
0
10

Basic Information

Base CVSS
9.8
EPSS Probability
0.41255%
EPSS Percentile
0.98519%
Introduced Version
0.12.0,0.2.0a1
Fix Available
0.12.3

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