RHEL 9 : python3.12 (RHSA-2026:1408)

medium Nessus Plugin ID 296754

Synopsis

The remote Red Hat host is missing one or more security updates for python3.12.

Description

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:1408 advisory.

Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems.

Security Fix(es):

* cpython: Excessive read buffering DoS in http.client (CVE-2025-13836)

* cpython: python: cpython: Quadratic algorithm in xml.dom.minidom leads to denial of service (CVE-2025-12084)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL python3.12 package based on the guidance in RHSA-2026:1408.

Plugin Details

Severity: Medium

ID: 296754

File Name: redhat-RHSA-2026-1408.nasl

Version: 1.1

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 1/27/2026

Updated: 1/27/2026

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:C

CVSS Score Source: CVE-2025-13836

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 6.3

Threat Score: 1.7

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:python3.12-tkinter, p-cpe:/a:redhat:enterprise_linux:python3.12-libs, p-cpe:/a:redhat:enterprise_linux:python3.12-test, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:python3.12-idle, p-cpe:/a:redhat:enterprise_linux:python3.12-debug, p-cpe:/a:redhat:enterprise_linux:python3.12, p-cpe:/a:redhat:enterprise_linux:python3.12-devel

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 1/27/2026

Vulnerability Publication Date: 12/1/2025

Reference Information

CVE: CVE-2025-12084, CVE-2025-13836

CWE: 770

RHSA: 2026:1408

Detections

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