{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"nltk","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":[],"id":"tcs_01M5NQDPT21E8ZPEMYQ31ZEGE1","modified_at":"2026-10-24T09:47:33.892934957Z","published_at":"2026-08-07T07:16:26.377Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-12261","https://security-tracker.debian.org/tracker/CVE-2026-12261"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-12261#Debian:13/nltk","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-12261"}],"summary":"A vulnerability in `nltk.downloader` in nltk/nltk versions <= 3.9.4 allows for cross-package resource and model poisoning. The downloader extracts package archives into shared namespaces such as `corp"}