https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-06T16:33:43.268959+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cve-2026-78681 CVE-2026-78681 — NLTK before 3.10.3 Entity Expansion DoS via ElementTree 2026-10-06T16:33:43.270549+00:00

Affected: nltk

NLTK versions before 3.10.3 use xml.etree.ElementTree to parse XML in multiple modules, which honors entity declarations in document DTDs. Attackers can craft XML payloads with nested entity declarations that expand from hundreds of bytes to megabytes in memory, causing denial of service.