P4Verified

CVE-2026-66393: nltk before 3.9.4 (exclusive), 0 to before 3.9.4

CVE-2026-66393. CVSS 3.1 base score 7.5 (HIGH, Vendor/CNA). EPSS 0.00521 (percentile 0.42652), scored 13-Oct-2026.

Affected technology

nltk · before 3.9.4 (exclusive)
nltk

nltk · 0 to before 3.9.4
nltk

Description’s affected range: versions before 3.9.4

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

The source reports that an attacker could disrupt service. Vendor/CNA’s CVSS 4.0 assessment (base score 8.7/10) rates confidentiality and integrity impact as none; availability impact as high.

Published 14-Oct-2026 15:58 UTC

CWE: CWE-674
CCR priority: 30.1 /100 (P4)
CVSS 3.1: 7.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · Vendor/CNA
EPSS: 0.00521 · percentile 0.42652 · 2026-10-13
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-14 15:56:36.793806+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-66393.html