{"id":"CVE-2026-83621","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-83621","generatedAt":"2026-10-28T02:17:44.276Z","title":"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.","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.","published":"2026-09-21T17:19:09.000Z","lastModified":"2026-09-23T17:17:50.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"},"cwe":["CWE-862"],"affected":[],"epss":{"score":0.0053,"percentile":0.44583,"date":"2026-10-26","history":[{"date":"2026-09-22","score":0.00293,"percentile":0.22172}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.53%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-21T17:19:09.000Z","detail":{"score":"8.1","severity":"HIGH","publishedAt":"2026-09-21T17:19:08.590Z"},"summary":"New CVE, high severity (CVSS 8.1)."}],"references":[{"url":"https://github.com/ntop/ntopng/commit/1d0627d802c59130c82478a4eb7f14014064eae5","source":"security-advisories@github.com"},{"url":"https://github.com/ntop/ntopng/commit/669589fe208fc932fe40a840e0de8e4d9df6023f","source":"security-advisories@github.com"},{"url":"https://github.com/ntop/ntopng/security/advisories/GHSA-ffg5-889g-f5q8","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-83621","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}