CVE-2026-1299 Affecting python3-tkinter package, versions <0:3.12.12-3.0.1.el10_1.1


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-ORACLE10-PYTHON3TKINTER-15702206
  • published20 Mar 2026
  • disclosed23 Jan 2026

Introduced: 23 Jan 2026

CVE-2026-1299  (opens in a new tab)

How to fix?

Upgrade Oracle:10 python3-tkinter to version 0:3.12.12-3.0.1.el10_1.1 or higher.
This issue was patched in ELSA-2026-4713.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-tkinter package and not the python3-tkinter package as distributed by Oracle. See How to fix? for Oracle:10 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