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Advisories

NLTK before 3.10.0 Arbitrary File Read via FileSystemPathPointer

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severity
medium
date
Affecting

  • nltk >= 0, < 3.10.0

CWE
  • CWE-284 Improper Access Control
CVSS
7.1
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Credit
ZeroXJacks
Description
NLTK versions before 3.10.0 contain a logic bug in FileSystemPathPointer.open() where the sandbox validation check compares a normalized path against itself, making the security check permanently inert. Attackers can pass file:// URLs to nltk.data.load() to read arbitrary files accessible to the process user, including credentials and configuration files.

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