CRLF Injection Affecting platform-python package, versions *


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
0.05% (15th percentile)

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  • Snyk IDSNYK-CENTOS8-PLATFORMPYTHON-15146579
  • published29 Jan 2026
  • disclosed23 Jan 2026

Introduced: 23 Jan 2026

CVE-2026-1299  (opens in a new tab)
CWE-93  (opens in a new tab)

How to fix?

There is no fixed version for Centos:8 platform-python.

NVD Description

Note: Versions mentioned in the description apply only to the upstream platform-python package and not the platform-python package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

The email module, specifically the "BytesGenerator" class, didn’t properly quote newlines for email headers when serializing an email message allowing for header injection when an email is serialized. This is only applicable if using "LiteralHeader" writing headers that don't respect email folding rules, the new behavior will reject the incorrectly folded headers in "BytesGenerator".

CVSS Base Scores

version 3.1