ntop ntopng up to 6.7.260717 Backup Configuration list_available_backups.lua prefs_dump_utils.build_prefs_dump_table information disclosure

Summaryinfo

A vulnerability described as problematic has been identified in ntop ntopng up to 6.7.260717. This affects the function prefs_dump_utils.build_prefs_dump_table of the file scripts/lua/rest/v2/get/system/configurations/list_available_backups.lua of the component Backup Configuration. The manipulation results in information disclosure. This vulnerability was named CVE-2026-84990. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic has been found in ntop ntopng up to 6.7.260717. Affected is the function prefs_dump_utils.build_prefs_dump_table of the file scripts/lua/rest/v2/get/system/configurations/list_available_backups.lua of the component Backup Configuration. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. CVE summarizes:

ntopng is a web-based network traffic monitoring application. Prior to 6.7.260718, scripts/lua/rest/v2/get/system/configurations/list_available_backups.lua and scripts/lua/rest/v2/get/system/configurations/download_backup.lua allow any authenticated non-admin user to list and download system-configuration backups without an administrator check. The download path reaches backup_config.export_backup, and prefs_dump_utils.build_prefs_dump_table includes the ntopng.user.* Redis key space in the backup. A downloaded backup can therefore disclose password hashes for local users and, when configured, API tokens, TOTP secrets, and WebAuthn credential data, enabling account compromise through usable or recoverable credentials. This issue is fixed in version 6.7.260718.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-84990 since 09/02/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

Upgrading to version 6.7.260718 eliminates this vulnerability.

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Productinfo

Vendor

• ntop

Name

• ntopng

Version

• 6.7.260717

Website

• Product: https://github.com/ntop/ntopng/

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