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.
Published: 2026-08-22
Score: 7.1 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories

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History

Sat, 22 Aug 2026 14:30:00 +0000

Type Values Removed Values Added
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.
Title NLTK before 3.10.0 Arbitrary File Read via FileSystemPathPointer
First Time appeared Nltk
Nltk nltk
Weaknesses CWE-284
CPEs cpe:2.3:a:nltk:nltk:*:*:*:*:*:*:*:*
Vendors & Products Nltk
Nltk nltk
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 7.1, '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'}

Subscriptions

Nltk Nltk
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-08-22T14:12:41.391Z

Reserved: 2026-07-23T12:51:09.595Z

Link: CVE-2026-65915

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-22T15:16:19.500

Modified: 2026-08-22T15:16:19.500

Link: CVE-2026-65915

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses