Missing Authentication for Critical Function in Natural Language Toolkit - CVE-2026-33231
Published: August 7, 2026
Vulnerability identifier: #VU141238
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-33231
CWE-ID: CWE-306
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper access control in nltk.app.wordnet_app when handling requests. A remote attacker can send a request to shut down the application to cause a denial of service.
Affected software
Natural Language Toolkit
How to mitigate CVE-2026-33231
Install security update from vendor's website.
Natural Language Toolkit - update to 3.9.4