CVE-2026-84990: high-severity vulnerability in ntopng
ntopng: Missing Authorization on System Configuration Backup Download and Listing
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 0.3%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
ntop · ntopngRelated CVEs — ntopng
In the same product, most dangerous first.
CVE-2026-82412HIGHntopng: Remote Code Execution via OS Command Injection in Vulnerability-Scan REST APIEPSS 0.7%CVE-2026-83621HIGHntopng: Missing Authorization Check in REST API Allows Non-Admin Users to Tamper Threat Intelligence Blacklist URLsEPSS 0.5%CVE-2026-86091HIGHntopng before 6.7.260717 Missing Authorization on the Host Pool Bulk Delete HandlerEPSS 0.5%CVE-2026-86090HIGHntopng before 6.7.260717 Missing Authorization on the Notification Endpoint and Recipient Delete HandlersEPSS 0.5%CVE-2026-84989HIGHntopng's Missing Authorization in REST API Allows Non-Admin Users to Delete and Rename Arbitrary TagsEPSS 0.4%CVE-2026-45448MEDIUMntopng - CWE-601: URL Redirection to Untrusted Site ('Open Redirect')EPSS 0.2%