RCE in Ntlk
CVE-2025-71408
NLTK (Natural Language Toolkit) before version 3.9.3 contains an eval injection vulnerability in the nltk.collocations module that allows an attacker who controls command-line arguments to execute arbitrary Python code. When collocations.p…
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Ntlk — versions 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (technical-description, exploit)
- disclosure@vulncheck.com (release-notes, patch)
- disclosure@vulncheck.com (issue-tracking, patch)
- disclosure@vulncheck.com (patch)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2025-71408?
- CVE-2025-71408 is a high-severity vulnerability in Ntlk, classified under Eval Injection. CVSS score: 7.8/10. Published 2026-07-24.
- How severe is CVE-2025-71408?
- High severity. CVSS v3 base score is 7.8 out of 10.