CVE catalog
CVE-2026-114605
dnspython: CVE-2026-114605
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.34% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | dnspython | sid | 2.8.0-6 | vulnerable |
| Debian | dnspython | forky | 2.8.0-6 | vulnerable |
| Debian | dnspython | trixie | 2.7.0-1 | vulnerable |
| Debian | dnspython | bookworm | 2.3.0-1 | vulnerable |
| Ubuntu | dnspython | 14.04 | 1.11.0-1 | vulnerable |
| Ubuntu | dnspython | 14.04 | 1.11.1-1 | vulnerable |
| Ubuntu | dnspython | 14.04 | 1.11.1-1build1 | vulnerable |
| Ubuntu | dnspython | 16.04 | 1.12.0-1 | vulnerable |
| Ubuntu | dnspython | 18.04 | 1.15.0-1 | vulnerable |
| Ubuntu | dnspython | 20.04 | 1.16.0-1 | vulnerable |
| Ubuntu | dnspython | 20.04 | 1.16.0-1build1 | vulnerable |
| Ubuntu | dnspython | 20.04 | 1.16.0-1ubuntu1 | vulnerable |
| Ubuntu | dnspython | 22.04 | 2.0.0+really1.16.0-2ubuntu2 | vulnerable |
| Ubuntu | dnspython | 22.04 | 2.0.0+really1.16.0-2ubuntu3 | vulnerable |
| Ubuntu | dnspython | 22.04 | 2.1.0-1ubuntu1 | vulnerable |
| Ubuntu | dnspython | 24.04 | 2.4.1-1ubuntu2 | vulnerable |
| Ubuntu | dnspython | 24.04 | 2.4.2-1ubuntu1 | vulnerable |
| Ubuntu | dnspython | 24.04 | 2.6.1-1ubuntu1 | vulnerable |
| Ubuntu | dnspython | 26.10 | 2.8.0-1ubuntu1 | vulnerable |
| Ubuntu | dnspython | 26.10 | 2.8.0-3ubuntu1 | vulnerable |
| Ubuntu | dnspython | 26.10 | 2.8.0-5 | vulnerable |
| Ubuntu | dnspython | 26.04 | 2.7.0-1ubuntu1 | vulnerable |
| Ubuntu | dnspython | 26.04 | 2.7.0-1ubuntu2 | vulnerable |
| Ubuntu | dnspython | 26.04 | 2.8.0-1ubuntu1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | dnspython | source | sid | (unfixed) | not yet assigned | Not reported | [1151842] |
| Debian | dnspython | source | forky | (unfixed) | not yet assigned | Not reported | [1151842] |
| Debian | dnspython | source | trixie | (unfixed) | not yet assigned | Not reported | [1151842] |
| Debian | dnspython | source | bookworm | (unfixed) | not yet assigned | Not reported | [1151842] |
Notes
[trixie] dnspython: Minor issue [bookworm] dnspython: Minor issue; can be fixed in next update
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [python3-dnspython]Affected
Source package: [dnspython]
Details (2)
2.3.0-1· all · bookwormAffected
dsa · dnspython · debian · bookworm; dsa · dnspython · debian · 12
2.3.0-1· all · bookwormAffected
dsa · dnspython · debian · bookworm; dsa · dnspython · debian · 12
[Debian 13 (Trixie)]
- [python3-dnspython]Affected
Source package: [dnspython]
Details (2)
2.7.0-1· all · trixieAffected
dsa · dnspython · debian · 13
2.7.0-1· all · trixieAffected
dsa · dnspython · debian · 13
Observed:
References
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-114605]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-114605]
- [https://security-tracker.debian.org/tracker/CVE-2026-114605]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-114605.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]