MEDIUM 6.3 NVD
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 eve
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.
References
- https://github.com/nltk/nltk/security/advisories/GHSA-vp2x-qp44-57v7
- https://www.vulncheck.com/advisories/nltk-before-3.10.3-quadratic-cpu-exhaustion-via-xmlco
This medium severity vulnerability with a CVSS score of 6.3 was published on 2026-08-27 via NVD.
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