CVE-2026-81723 - NLTK versions before 3.10.3 contain a quadratic CPU exhaustion vulnerability in XMLCorpusView._read_xml_fragment() that rescans accumulated XML fragments on every 1 KiB block read. Attackers can provide malformed XML corpus files to cause severe CPU consumption and denial of service through affected readers like BNCCorpusReader. - 漏洞详情

漏洞编号：CVE-2026-81723

风险等级：低危

漏洞来源：CVE

CVE 编号：CVE-2026-81723

CNNVD 编号：-

厂商/产品：- / -

影响范围：-

CWE：CWE-400

发布/更新时间：2026-08-27 / 2026-08-27

漏洞描述

NLTK versions before 3.10.3 contain a quadratic CPU exhaustion vulnerability in XMLCorpusView._read_xml_fragment() that rescans accumulated XML fragments on every 1 KiB block read. Attackers can provide malformed XML corpus files to cause severe CPU consumption and denial of service through affected readers like BNCCorpusReader.

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