SB2026021361 - Red Hat Enterprise Linux 8 update for python3

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Main Vulnerability Database SB2026021361

SB2026021361 - Red Hat Enterprise Linux 8 update for python3

Published: February 13, 2026

Security Bulletin ID SB2026021361
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Inconsistent interpretation of HTTP requests (CVE-ID: CVE-2026-0865)

CWE-ID: CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to perform HTTP request smuggling attacks.

The vulnerability exists due to improper validation of HTTP requests. A remote attacker can send a specially crafted HTTP request to the application and smuggle arbitrary HTTP headers.

Successful exploitation of vulnerability may allow an attacker to poison HTTP cache and perform phishing attacks.


2) IMAP command injection (CVE-ID: CVE-2025-15366)

CWE-ID: CWE-77 - Command injection

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to execute arbitrary IMAP commands.

The vulnerability exists due to insufficient input validation. A remote attacker can pass specially crafted data to the application and execute arbitrary IMAP commands.


3) POP3 command injection (CVE-ID: CVE-2025-15367)

CWE-ID: CWE-77 - Command injection

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to execute arbitrary POP3 commands.

The vulnerability exists due to insufficient input validation. A remote attacker can pass specially crafted data to the application and execute arbitrary POP3 commands on the server.


4) CRLF injection (CVE-ID: CVE-2026-1299)

CWE-ID: CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to inject arbitrary header into email messages.

The vulnerability exists due to insufficient validation of attacker-supplied data in "BytesGenerator" class. A remote attacker can pass specially crafted data to the application containing CR-LF characters and perform a spoofing attack.


Remediation

Install update from vendor's website.

References