CVE-2026-62383

nltk versions before 3.10.2 contain a symlink-based arbitrary file read vulnerability in IPIPANCorpusReader methods that bypass nltk.pathsec validation entirely. Attackers can place a symlink in the corpus root directory and read arbitrary files accessible to the process by calling channels(), domains(), categories(), or fileids() methods with the symlink filename.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/nltk/nltk/security/advisories/GHSA-3hhw-38pf-pxj6	Exploit Mitigation Vendor Advisory
https://www.vulncheck.com/advisories/nltk-ipipancorpusreader-symlink-arbitrary-file-read	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:nltk:nltk:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-08-22 15:16

Updated : 2026-08-27 21:43

NVD link : CVE-2026-62383

Mitre link : CVE-2026-62383

CVE.ORG link : CVE-2026-62383

JSON object : View

Products Affected

nltk

nltk

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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