Vulnerability Details CVE-2026-81726
NLTK through 3.10.3 contains a path traversal vulnerability in model-artifact APIs that bypass pathsec enforcement by using raw file operations on caller-controlled paths. Attackers can read or write files outside allowed sandbox roots through TransitionParser, AveragedPerceptron, PerceptronTagger, and maxent parameter APIs when pathsec is enabled.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 18.1%
CVSS Severity
CVSS v3 Score 7.0