{"id":"CVE-2026-114605","title":"dnspython: dnspython: Denial of Service via excessive DNS compression pointer traversal (CVE-2026-114605)","summary":"A flaw was found in dnspython. A remote attacker can cause a Denial of Service (DoS) by sending a specially crafted Domain Name System (DNS) message containing excessive compression pointer chains. Because the parser does not enforce a hop…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-606","CWE-674"],"vendor":"Red Hat","product":"Red Hat OpenStack Platform 16.2","affected":["ansible_automation_orchestrator 2026","exploit_intelligence","lightspeed_core","migration_toolkit_for_applications 8","migration_toolkit_for_containers","ai_inference_server","ansible_automation_platform 2","enterprise_linux 10","enterprise_linux 8","enterprise_linux 9","enterprise_linux_ai_rhel_ai 3","enterprise_linux_command_line_assistant","openshift_ai_rhoai","openshift_container_platform 4","openshift_virtualization 4","openstack_platform_13_queens","openstack_platform 16.2","openstack_platform 17.1","openstack_platform 18.0","satellite 6","trusted_artifact_signer"],"published":"2026-10-22","updated":"2026-10-23","sourceUpdated":"2026-10-23T10:43:29+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-114605.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-114605.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-114605"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2559128"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-114605"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-114605"},{"url":"https://github.com/rthalley/dnspython/commit/b485e460c266540a1a09ca6d8d1d7b685b1d3023"},{"url":"https://github.com/rthalley/dnspython/releases/tag/v2.9.0"},{"url":"https://github.com/rthalley/dnspython/security/advisories/GHSA-45c3-73f7-pv4m"}],"tags":["csaf","vex","red-hat","cve.org"],"ingestedAt":"2026-10-22T22:00:50.345Z","slug":"CVE-2026-114605","body":"## Overview\n\nA flaw was found in dnspython. A remote attacker can cause a Denial of Service (DoS) by sending a specially crafted Domain Name System (DNS) message containing excessive compression pointer chains. Because the parser does not enforce a hop limit during name decompression, processing these malformed messages leads to excessive CPU utilization and application unresponsiveness.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: Ansible Automation Orchestrator 2026, Exploit Intelligence, Lightspeed Core, Migration Toolkit for Applications 8, Migration Toolkit for Containers, Red Hat AI Inference Server, … · no fix planned: Ansible Automation Orchestrator 2026, Exploit Intelligence, Lightspeed Core, Migration Toolkit for Applications 8, … · updated 2026-10-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-114605.json)\n\n**dnspython: dnspython: Denial of Service via excessive DNS compression pointer traversal** — rated Important by Red Hat. Released 2026-10-22, updated 2026-10-23.\n\nAffected:\n\n- Ansible Automation Orchestrator 2026\n- Exploit Intelligence\n- Lightspeed Core\n- Migration Toolkit for Applications 8\n- Migration Toolkit for Containers\n- Red Hat AI Inference Server\n- Red Hat Ansible Automation Platform 2\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat Enterprise Linux AI (RHEL AI) 3\n- Red Hat Enterprise Linux command line assistant\n- Red Hat OpenShift AI (RHOAI)\n- Red Hat OpenShift Container Platform 4\n- Red Hat OpenShift Virtualization 4\n- Red Hat OpenStack Platform 13 (Queens)\n- Red Hat OpenStack Platform 16.2\n- Red Hat OpenStack Platform 17.1\n- Red Hat OpenStack Platform 18.0\n- Red Hat Satellite 6\n- Red Hat Trusted Artifact Signer\n\nNo fix planned:\n\n- Ansible Automation Orchestrator 2026\n- Exploit Intelligence\n- Lightspeed Core\n- Migration Toolkit for Applications 8\n- Migration Toolkit for Containers\n- Red Hat AI Inference Server\n- Red Hat Ansible Automation Platform 2\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat Enterprise Linux AI (RHEL AI) 3\n- Red Hat Enterprise Linux command line assistant\n- Red Hat OpenShift AI (RHOAI)\n- Red Hat OpenShift Container Platform 4\n- Red Hat OpenShift Virtualization 4\n- Red Hat OpenStack Platform 13 (Queens)\n- Red Hat OpenStack Platform 16.2\n- Red Hat OpenStack Platform 17.1\n- Red Hat OpenStack Platform 18.0\n- Red Hat Satellite 6\n- Red Hat Trusted Artifact Signer\n\nNot affected:\n\n- Red Hat Ansible Automation Platform 2\n\n## Remediation\n\nAffected","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}