CVE-2026-83621: ntopng: Missing Authorization Check in REST API Allows Non-Admin Users to Tamper Threat Intelligence Blacklist URLs

Overview

Severity

High (CVSS 8.1)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Exploit Status

Not Exploited

Patch Tuesday

2026-Sep

Released

2026-09-23

EPSS Score

0.29% (percentile: 22.2%)

Affected Products (1)

Other

• 21890-17084

Security Updates (1)

• Security Update

Revision History

• 2026-09-23: Information published.