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Fencer Vulns
high 7.5

CVE-2026-114605 json

dnspython dns.name.from_wire_parser() excessive CPU use

published 2026-10-22 18 d ago modified 2026-10-29 11 d ago also GHSA-45c3-73f7-pv4m , EUVD-2026-108227

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits
0
none known

Summary

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.

Patch / fix

  • pypi dnspython 2.9.0
  • dnspython Debian 14 2.8.0-7

debian advisories DEBIAN-CVE-2026-114605

  • python3-dns AlmaLinux 8 1.15.0-13.el8_10

almalinux advisories ALSA-2026:94749

  • python-dns Rocky Linux 8 1.15.0-13.el8_10

rocky linux advisories RLSA-2026:94749

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-114605 updated cvss 7.5

dnspython: dnspython: Denial of Service via excessive DNS compression pointer traversal

  • Red Hat Ansible Automation Orchestrator 2026 ansible-automation-platform/automation-orchestrator-backend-rhel9 Red Hat Exploit Intelligence exploit-intelligence/vulnerability-analysis-rhel9 Red Hat Lightspeed Core lightspeed-core/lightspeed-stack-rhel9 Red Hat Migration Toolkit for Applications 8 mta/mta-solution-server-rhel9 Red Hat Migration Toolkit for Containers rhmtc/openshift-migration-hook-runner-rhel8
    affected: no fix available
  • Red Hat AI Inference Server rhaii/vllm-cpu-rhel9, rhaii/vllm-tpu-rhel9, rhaii/vllm-cuda-rhel9, rhaii/vllm-rocm-rhel9, rhaiis/vllm-cpu-rhel9, rhaiis/vllm-tpu-rhel9, +7 more
    affected: no fix available, no fix planned “Will not fix”
  • Red Hat Ansible Automation Platform 2 ansible-automation-platform-26/ee-supported-rhel9, ansible-automation-platform-27/ee-supported-rhel9, ansible-automation-platform-26/lightspeed-chatbot-rhel9, ansible-automation-platform-27/lightspeed-chatbot-rhel9, ansible-automation-platform-24/platform-resource-runner-rhel8, ansible-automation-platform-25/platform-resource-runner-rhel8 Red Hat Enterprise Linux 9 python3-dns, python-dns 2.6.1-1.el10 Red Hat Enterprise Linux 10 python-dns 2.6.1-1.el10 Red Hat Enterprise Linux AI (RHEL AI) 3 rhelai3/bootc-cuda-rhel9, rhelai3/bootc-rocm-rhel9, rhelai3/bootc-gaudi-rhel9, rhelai3/bootc-aws-cuda-rhel9, rhelai3/bootc-gcp-cuda-rhel9, rhelai3/disk-image-cuda-rhel9, +2 more Red Hat OpenShift AI (RHOAI) rhoai/odh-ogx-core-rhel9, rhoai/odh-caikit-nlp-rhel9, rhoai/odh-llm-d-kv-cache-rhel9, rhoai/odh-llama-stack-core-rhel9, rhoai/odh-caikit-tgis-serving-rhel9, rhoai/odh-th-torch-cuda-py312-rhel9, +16 more Red Hat OpenShift Container Platform 4 python-eventlet, python3-eventlet, python-dns 2.6.1-1.el10, openshift4/ose-ironic-rhel9, openshift4/ose-ironic-agent-rhel9
    +6 more products
    Red Hat OpenShift Container Platform 5 openshift5/ose-ironic-rhel9, openshift5/ose-ironic-agent-rhel9 Red Hat OpenShift Virtualization 4 container-native-virtualization/ocp-virt-validation-checkup-rhel9 Red Hat OpenStack Platform 13 (Queens) python-dns 2.6.1-1.el10 Red Hat OpenStack Platform 16.2 rhosp-rhel8/openstack-ec2-api, rhosp-rhel8/openstack-horizon, rhosp-rhel8/openstack-tempest, rhosp-rhel8/openstack-aodh-api, rhosp-rhel8/openstack-heat-all, rhosp-rhel8/openstack-heat-api, +84 more Red Hat OpenStack Platform 17.1 python-eventlet, python3-eventlet, rhosp-rhel9/openstack-tempest, rhosp-rhel9/openstack-nova-api, rhosp-rhel9/openstack-designate-api, rhosp-rhel9/openstack-novajoin-base, +11 more Red Hat OpenStack Platform 18.0 rhoso/openstack-horizon-rhel9, rhoso/openstack-aodh-api-rhel9, rhoso/openstack-heat-api-rhel9, rhoso/openstack-keystone-rhel9, rhoso/openstack-nova-api-rhel9, rhoso/openstack-aodh-base-rhel9, +70 more
    affected: no fix available
  • Red Hat Enterprise Linux BaseOS (v. 8) python-dns 1.15.0-13.el8_10, python3-dns 1.15.0-13.el8_10
    fixed: vendor fix RHSA-2026:94749
  • Red Hat Satellite 6.18 satellite/foreman-mcp-server-rhel9 1793272276
    fixed: vendor fix RHSA-2026:92667
  • Red Hat Satellite 6.19 satellite/foreman-mcp-server-rhel9 1793272279
    fixed: vendor fix RHSA-2026:92666
  • Red Hat Trusted Artifact Signer 1.5 rhtas/rh-sigstore-a2a-rhel9 1793624122, rhtas/model-transparency-rhel9 1793696578
    fixed: vendor fix RHSA-2026:95261
  • Red Hat Ansible Automation Platform 2 ansible-automation-platform-24/ee-supported-rhel8, ansible-automation-platform-24/ee-supported-rhel9, ansible-automation-platform-25/ee-supported-rhel8, ansible-automation-platform-25/ee-supported-rhel9
    not affected: vulnerable code not present
show 2 more
  • Red Hat Enterprise Linux command line assistant rhel-cla/rhel-knowledge-bridge-rhel10
    not affected: vulnerable code not in execute path
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-vllm-gaudi-rhel9, rhoai/odh-kserve-agent-rhel9, rhoai/odh-kserve-router-rhel9, rhoai/odh-kserve-controller-rhel9
    not affected: component not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
11 d ago

Exploit prediction

0.47% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
pypi dnspython
<2.9.0
2.9.0

Affected products

  • rthalley dnspython

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.