CVE WATCH / VULNERABILITY DETAIL
CVE-2026-126300
MEDIUMCVSS 5.3NVD feed
Published 13 November 2026 · tracked since 14 November 2026
Description
NLTK from 3.2.5 before 3.10.4 contains an algorithmic complexity vulnerability in TreebankWordTokenizer.span_tokenize that allows remote attackers to cause quadratic CPU consumption through repeated list.pop(0) calls. Attackers can submit long runs of double-quote characters to services span-tokeniz
References
- NVD — National Vulnerability Database
- CVE.org record (MITRE)
- CISA Known Exploited Vulnerabilities catalog
Latest tracked vulnerabilities
- CVE-2026-126400 LOW 3.7
- CVE-2026-126384 HIGH 7.5
- CVE-2026-126383 HIGH 8.2
- CVE-2026-126381 MEDIUM 6.3
- CVE-2026-126380 CRITICAL 9.1
- CVE-2026-126378 CRITICAL 9.1
- CVE-2026-126377 HIGH 8.1
- CVE-2026-126374 MEDIUM 4.3
- CVE-2026-126372 HIGH 8.8
- CVE-2026-126370 HIGH 8.8