PYSEC-2026-3731

vendorUSosv
view advisory published 2026-08-22Licence: CC-BY-4.0

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.

01

describes (1)

Related CVEs.

IDseverity exploitable
CVE-2026-65915USmedium6.5—
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 ch…
02

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