{"id":"GHSA-45c3-73f7-pv4m","aliases":["CVE-2026-114605"],"title":"dnspython dns.name.from_wire_parser() excessive CPU use","description":"### 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'd 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 & Athena Research Center, Greece\nConstantinos Patsakis, Department of Informatics, University of Piraeus & Athena Research Center, Greece\nGeorge Stergiopoulos, Department of Informatics, Athens University of Economics and Business, Greece","severity":"high","score":7.5,"published":"2026-10-27T15:37:37.000Z","modified":"2026-10-27T15:47:24.143Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"PyPI","name":"dnspython","ranges":[{"events":[{"introduced":"0"},{"fixed":"2.9.0"}],"type":"ECOSYSTEM"}],"versions":["1.0.0","1.1.0","1.10.0","1.11.0","1.11.1","1.12.0","1.13.0","1.14.0","1.15.0","1.16.0","1.2.0","1.3.0","1.3.1","1.3.2","1.3.3","1.3.4","1.3.5","1.4.0","1.5.0","1.6.0","1.7.1","1.8.0","1.9.0","1.9.1","1.9.2","1.9.3","1.9.4","2.0.0","2.0.0rc1","2.0.0rc2","2.1.0","2.1.0rc1","2.2.0","2.2.0rc1","2.2.1","2.3.0","2.3.0rc1","2.4.0","2.4.0rc1","2.4.1","2.4.2","2.5.0","2.5.0rc1","2.6.0","2.6.0rc1","2.6.1","2.7.0","2.7.0rc1","2.8.0","2.8.0rc1"],"fixed":["2.9.0"]}],"references":["https://github.com/rthalley/dnspython/security/advisories/GHSA-45c3-73f7-pv4m","https://nvd.nist.gov/vuln/detail/CVE-2026-114605","https://github.com/rthalley/dnspython/commit/b485e460c266540a1a09ca6d8d1d7b685b1d3023","https://github.com/rthalley/dnspython","https://github.com/rthalley/dnspython/releases/tag/v2.9.0"],"sources":[{"name":"OSV","id":"GHSA-45c3-73f7-pv4m","modified":"2026-10-27T15:47:24.143338210Z","url":"https://osv.dev/vulnerability/GHSA-45c3-73f7-pv4m"}],"assessments":[{"source":"OSV","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5}]}