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 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.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/ntop/ntopng/commit/1d0627d802c59130c82478a4eb7f14014064eae5
https://github.com/ntop/ntopng/commit/669589fe208fc932fe40a840e0de8e4d9df6023f
https://github.com/ntop/ntopng/security/advisories/GHSA-ffg5-889g-f5q8

Configurations

No configuration.

History

21 Sep 2026, 17:19

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-21 17:19

Updated : 2026-09-23 17:17

NVD link : CVE-2026-83621

Mitre link : CVE-2026-83621

CVE.ORG link : CVE-2026-83621

JSON object : View

Products Affected

No product.

CWE

CWE-862

Missing Authorization

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