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.
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History
Thu, 22 Oct 2026 16:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | dnspython dns.name.from_wire_parser() excessive CPU use | |
| Weaknesses | CWE-674 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-10-22T16:25:32.509Z
Reserved: 2026-10-21T20:34:25.599Z
Link: CVE-2026-114605
No data.
Status : Deferred
Published: 2026-10-22T17:16:58.237
Modified: 2026-10-22T17:40:46.877
Link: CVE-2026-114605
No data.
OpenCVE Enrichment
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Weaknesses