Unchecked Return Value Affecting python312-idle package, versions <3.12.14-150600.3.68.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
3.2% (88th percentile)

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  • Snyk IDSNYK-SLES156-PYTHON312IDLE-20556424
  • published7 Oct 2026
  • disclosed6 Oct 2026

Introduced: 6 Oct 2026

NewCVE-2021-4189  (opens in a new tab)
CWE-252  (opens in a new tab)

How to fix?

Upgrade SLES:15.6 python312-idle to version 3.12.14-150600.3.68.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python312-idle package and not the python312-idle package as distributed by SLES. See How to fix? for SLES:15.6 relevant fixed versions and status.

A flaw was found in Python, specifically in the FTP (File Transfer Protocol) client library in PASV (passive) mode. The issue is how the FTP client trusts the host from the PASV response by default. This flaw allows an attacker to set up a malicious FTP server that can trick FTP clients into connecting back to a given IP address and port. This vulnerability could lead to FTP client scanning ports, which otherwise would not have been possible.

CVSS Base Scores

version 3.1