CVE WatchSep 23, 2026

CVE-2026-83621

ntopng is a web-based network traffic monitoring application. Prior to 6.7.260717, POST /lua/rest/v2/edit/system/edit_blacklist.lua in scrip

CVSS

8.1

High

EPSS

0.5%

p44

KEV

—

Exploit Today

0-100

Published: Sep 21, 2026 · Last modified: Sep 23, 2026 · CWE-862

EPSS · 30d

0.3%EPSS · 30 days0.5%

2026-09-222026-10-19

Technical description

ntopng is a web-based network traffic monitoring application. Prior to 6.7.260717, POST /lua/rest/v2/edit/system/edit_blacklist.lua in scripts/lua/rest/v2/edit/system/edit_blacklist.lua lacks an administrator check and calls lists_utils.editList for any authenticated user. The list_name, list_enabled, url, and list_update parameters allow a non-admin user to redirect threat-intelligence downloads to attacker-controlled content, disable blocklists, or prevent scheduled updates. The changes are persisted through Redis and reloaded without a lower-level authorization guard, undermining the integrity and availability of ntopng's threat-intelligence monitoring. This issue is fixed in version 6.7.260717.

Official references

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