Dnspython < 2.9.0 DoS

high Nessus Plugin ID 377044

Synopsis

A Python library installed on the remote host is affected by a denial of service vulnerability.

Description

The version of dnspython installed on the remote host is prior to 2.9.0. It is, therefore, affected by a denial of service vulnerability:

- dnspython is a DNS toolkit for Python. Prior to 2.9.0, dns.name.from_wire_parser follows attacker-controlled DNS compression pointer chains without a hop limit. A malicious DNS wire-format message can force excessive pointer traversal during name decompression, causing high CPU use, application degradation, or denial of service in applications that process untrusted DNS messages. This issue is fixed in version 2.9.0. (CVE-2026-114605)

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

Solution

Upgrade to dnspython version 2.9.0 or later.

Plugin Details

Severity: High

ID: 377044

File Name: dnspython_CVE-2026-114605.nasl

Version: 1.1

Type: Local

Agent: windows, macosx, unix

Family: Misc.

Published: 11/6/2026

Updated: 11/6/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.74

CVSS v2

Risk Factor: High

Base Score: 7.8

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

CVSS Score Source: CVE-2026-114605

CVSS v3

Risk Factor: High

Base Score: 7.5

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

Vulnerability Information

CPE: cpe:/a:python:dnspython

Patch Publication Date: 10/9/2026

Vulnerability Publication Date: 10/9/2026

Reference Information

CVE: CVE-2026-114605

Detections

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