Cross-site scripting in Natural Language Toolkit - CVE-2026-33230
Published: August 7, 2026
Vulnerability identifier: #VU141239
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-33230
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to inject arbitrary script code.
The vulnerability exists due to cross-site scripting in web page generation when rendering unsanitized input. A remote attacker can craft malicious input to inject arbitrary script code.
User interaction is required to trigger the issue.
Affected software
Natural Language Toolkit
How to mitigate CVE-2026-33230
Install security update from vendor's website.
Natural Language Toolkit - update to 3.9.4