CVE-2025-61622: PYSEC-2026-491 - Apache Pyfory python is vulnerable to deserialization of untrusted data

CVE-2025-61622 · Severity: low · CVSS 3.1 · Published 2026-06-29

Apache Pyfory python is vulnerable to deserialization of untrusted data

Vendors: PyPI.

Quick answers

Is CVE-2025-61622 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-61622 being exploited in the wild.
How severe is CVE-2025-61622?
Low severity, with a CVSS score of 3.1, published 29 June 2026.
Which products and versions are affected?
pyfory (PyPI) ECOSYSTEM:introduced=0.12.0,fixed=0.12.3; pyfury (PyPI) ECOSYSTEM:introduced=0.1.0,last_affected=0.10.3.
Is there a fix for CVE-2025-61622?
Yes. pyfory (PyPI): upgrade to 0.12.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2025-61622?
Check whether you run pyfory (PyPI) or pyfury (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • pyfory (PyPI): upgrade to 0.12.3 or later
    pip install "pyfory>=0.12.3"

Affected products

  • pyfory (PyPI) ECOSYSTEM:introduced=0.12.0,fixed=0.12.3
  • pyfury (PyPI) ECOSYSTEM:introduced=0.1.0,last_affected=0.10.3

Identifiers

  • CVE-2025-61622
  • GHSA-538v-3wq9-4h3r
  • PYSEC-2026-490
  • PYSEC-2026-491

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.