SB2026030654 - Fedora 42 update for python3.11

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Main Vulnerability Database SB2026030654

SB2026030654 - Fedora 42 update for python3.11

Published: March 6, 2026

Security Bulletin ID SB2026030654
Severity
Medium
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Input validation error (CVE-ID: CVE-2025-11468)

The vulnerability allows a remote attacker to perform a spoofing attack.

The vulnerability exists due to insufficient validation of user-supplied input in Lib/email/_header_value_parser.py. A remote attacker can manipulate email headers and perform spoofing attack.


2) CRLF injection (CVE-ID: CVE-2026-0672)

The vulnerability allows a remote attacker to inject arbitrary data in server response.

The vulnerability exists due to insufficient validation of attacker-supplied data when using http.cookies.Morsel. A remote attacker can pass specially crafted data to the application containing CR-LF characters and modify application behavior leading to a spoofing attack.


3) CRLF injection (CVE-ID: CVE-2025-15282)

The vulnerability allows a remote attacker to inject arbitrary data in server response.

The vulnerability exists due to insufficient validation of attacker-supplied data in urllib.request.DataHandler. A remote attacker can pass specially crafted data to the application containing CR-LF characters and modify application behavior.


Remediation

Install update from vendor's website.

References