CVE-2026-109956Published

NLTK through 3.10.3 Path Traversal via WekaClassifier Model Path

Exact source revision recorded 26 Oct 2026 20:35:31 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

cve-program · CVE-2026-109956

Published

NLTK through 3.10.3 contains a path traversal vulnerability in WekaClassifier that allows attackers to bypass nltk.pathsec containment by supplying unvalidated model paths. Attackers controlling the model_filename or model argument can make the weka JVM write files via -d or probe files via -l outside allowed data roots.

Source published: 13 Oct 2026 13:27:20 UTC
Source modified: 26 Oct 2026 19:46:30 UTC
Observed here: 26 Oct 2026 20:35:31 UTC
Source terms: CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 4.0 · 8.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N

CVSS 3.1 · 7.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L