{"cve":"CVE-2026-62388","nvd":{"published":"2026-08-22T15:16:18.967","modified":"2026-10-14T13:10:00.187","status":"Analyzed","description":"NLTK versions before 3.10.0 default to ENFORCE=False in pathsec.py, causing all security validation functions to emit warnings instead of raising exceptions. Attackers can bypass path traversal and pickle deserialization protections by exploiting the disabled security controls that are only active when manually enabled.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","score":8.7},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-1188"],"references":["https://github.com/nltk/nltk/security/advisories/GHSA-p3m8-78j2-g5p3","https://www.vulncheck.com/advisories/nltk-before-insecure-default-configuration-pathsec","https://github.com/nltk/nltk/security/advisories/GHSA-p3m8-78j2-g5p3"],"products":["nltk:nltk"],"source":"nvd","synced_at":"2026-10-19T22:49:38.260478770+00:00"},"epss":{"cve":"CVE-2026-62388","score":0.00512,"percentile":0.43409,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-p3m8-78j2-g5p3","url":"https://osv.dev/vulnerability/GHSA-p3m8-78j2-g5p3","summary":"NLTK: Default ENFORCE=False Disables All pathsec Security Controls","modified":"2026-09-02T16:00:17.572328596Z","packages":[{"ecosystem":"PyPI","name":"nltk","purl":"pkg:pypi/nltk","ranges":["<3.10.0"],"fixed":["3.10.0"]}]},{"id":"PYSEC-2026-3722","url":"https://osv.dev/vulnerability/PYSEC-2026-3722","summary":"","modified":"2026-08-28T02:30:02.701073183Z","packages":[{"ecosystem":"PyPI","name":"nltk","purl":"pkg:pypi/nltk","ranges":["<3.10.0"],"fixed":["3.10.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}