CVE-2026-81723 — NLTK before 3.10.3 Quadratic CPU Exhaustion via XMLCorpusView
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 re…
Published: 2026-08-27 · CVSS: 6.3 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7