CVE-2026-62388
NLTK before 3.10.0 Insecure Default Configuration in pathsec.py
- State
- Published
- Severity
- 8.7 High
- Published
- Aug 22, 2026
- Updated
- Aug 29, 2026
- Reserved
- Jul 13, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | 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 | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-1188 Initialization of a Resource with an Insecure Default
Affected Products
| Product | Versions |
|---|---|
nltknltk |
|
References
- GitHub Security Advisory (GHSA-p3m8-78j2-g5p3)vendor-advisory
- VulnCheck Advisory: NLTK before 3.10.0 Insecure Default Configuration pathsecthird-party-advisory
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