P4Verified

CVE-2025-66221: werkzeug before 3.1.4 (exclusive), < 3.1.4

CVE-2025-66221. CVSS 3.1 base score 5.3 (MEDIUM, NVD). EPSS 0.00511 (percentile 0.41573), scored 2026-10-06.

Affected technology

werkzeug · before 3.1.4 (exclusive)
palletsprojects

werkzeug · < 3.1.4
pallets

Component: Not specified by the source
Function: allows

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

What an attacker can do

Vendor/CNA’s CVSS 4.0 assessment (base score 6.3/10) rates confidentiality and integrity impact as none; availability impact as low. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 2026-10-07 23:05:58.400387+00:00

CWE: CWE-67
CCR priority: 21.3 /100 (P4)
CVSS 3.1: 5.3 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L · NVD
EPSS: 0.00511 · percentile 0.41573 · 2026-10-06
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-07 23:02:50.240617+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2025-66221.html