GHSA-45C3-73F7-PV4M
Vulnerability from github – Published: 2026-10-27 15:37 – Updated: 2026-10-27 15:37Impact
A maliciously crafted DNS message may cause dns.name.from_wire_parser() to use excessive CPU for DNS name decompression. Applications that process untrusted DNS wire form messages with dnspython may be degraded or DoS'd by the extra CPU use required.
Patches
This problem is fixed in dnspython 2.9.0.
Workarounds
There are no known workarounds.
Credit
Evgenios Gkritsis, Department of Informatics, University of Piraeus & Athena Research Center, Greece Constantinos Patsakis, Department of Informatics, University of Piraeus & Athena Research Center, Greece George Stergiopoulos, Department of Informatics, Athens University of Economics and Business, Greece
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "dnspython"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.9.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-114605"
],
"database_specific": {
"cwe_ids": [
"CWE-674"
],
"github_reviewed": true,
"github_reviewed_at": "2026-10-27T15:37:37Z",
"nvd_published_at": "2026-10-22T17:16:58Z",
"severity": "HIGH"
},
"details": "### Impact\nA maliciously crafted DNS message may cause dns.name.from_wire_parser() to use excessive CPU for DNS name decompression. Applications that process untrusted DNS wire form messages with dnspython may be degraded or DoS\u0027d by the extra CPU use required.\n\n### Patches\nThis problem is fixed in dnspython 2.9.0.\n\n### Workarounds\nThere are no known workarounds.\n\n### Credit\nEvgenios Gkritsis, Department of Informatics, University of Piraeus \u0026 Athena Research Center, Greece\nConstantinos Patsakis, Department of Informatics, University of Piraeus \u0026 Athena Research Center, Greece\nGeorge Stergiopoulos, Department of Informatics, Athens University of Economics and Business, Greece",
"id": "GHSA-45c3-73f7-pv4m",
"modified": "2026-10-27T15:37:37Z",
"published": "2026-10-27T15:37:37Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/rthalley/dnspython/security/advisories/GHSA-45c3-73f7-pv4m"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-114605"
},
{
"type": "WEB",
"url": "https://github.com/rthalley/dnspython/commit/b485e460c266540a1a09ca6d8d1d7b685b1d3023"
},
{
"type": "PACKAGE",
"url": "https://github.com/rthalley/dnspython"
},
{
"type": "WEB",
"url": "https://github.com/rthalley/dnspython/releases/tag/v2.9.0"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "dnspython dns.name.from_wire_parser() excessive CPU use"
}
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