Low severity3.7NVD Advisory· Published Aug 27, 2026
CVE-2026-81723
CVE-2026-81723
Description
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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Affected products
1Patches
Vulnerability mechanics
References
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