CVE-2026-114605
highdnspython is a DNS toolkit for Python.
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.
CVSS
7.5
7.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (security-advisories@github.com)
Timeline (UTC)
Published: 2026-10-22 17:16
Modified: 2026-10-29 04:18
NVD status: Deferred
Last synced 1 hour ago
Verified against the source API 2026-10-29 04:43 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/rthalley/dnspython/commit/b485e460c266540a1a09ca6d8d1d7b685b1d3023 security-advisories@github.com
- https://github.com/rthalley/dnspython/releases/tag/v2.9.0 security-advisories@github.com
- https://github.com/rthalley/dnspython/security/advisories/GHSA-45c3-73f7-pv4m security-advisories@github.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-29 04:43 UTC · record ↗