CVE-2026-62384
NLTK FramenetCorpusReader Symlink Sandbox Bypass before 3.10.2
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
NLTK versions before 3.10.2 contain a symlink-based sandbox bypass in FramenetCorpusReader that allows attackers to read arbitrary XML files outside the corpus root. Attackers can place symlinks with names containing no path separators inside the corpus subdirectory, which pass the path validation guard and are resolved to files outside the intended corpus root when accessed via frame_by_name(), _lu_file(), or doc() methods.
| CWE | CWE-22 |
| Vendor | nltk |
| Product | nltk |
| Published | Aug 22, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
nltk / nltk
3.10.0 < 3.10.2
References
Credits
🔍 LiteshGhute