CVE-2026-79676
NLTK before 3.10.3 Path Traversal via Symlink Bypass
CVSS Score
5.9
EPSS Score
0.0%
EPSS Percentile
0th
NLTK versions before 3.10.3 contain a path traversal vulnerability in corpus readers that reopen root-derived paths using built-in open() instead of nltk.pathsec.open(), allowing symlinks to escape trusted roots. Attackers who stage symlinked corpus files under a trusted data root can disclose outside-root content through normal corpus reader methods like channels(), domains(), and synonyms().
| CWE | CWE-22 |
| Vendor | nltk |
| Product | nltk |
| Published | Aug 25, 2026 |
| Last Updated | Aug 25, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
nltk / nltk
0 < 3.10.3
References
Credits
🔍 leduckhuong