CVE-2026-83621

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-83621", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-31T20:36:25.744Z", "datePublished": "2026-09-21T16:08:23.333Z", "dateUpdated": "2026-09-21T20:45:33.312Z"}, "containers": {"cna": {"title": "ntopng: Missing Authorization Check in REST API Allows Non-Admin Users to Tamper Threat Intelligence Blacklist URLs", "problemTypes": [{"descriptions": [{"cweId": "CWE-862", "lang": "en", "description": "CWE-862: Missing Authorization", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/ntop/ntopng/security/advisories/GHSA-ffg5-889g-f5q8", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/ntop/ntopng/security/advisories/GHSA-ffg5-889g-f5q8"}, {"name": "https://github.com/ntop/ntopng/commit/1d0627d802c59130c82478a4eb7f14014064eae5", "tags": ["x_refsource_MISC"], "url": "https://github.com/ntop/ntopng/commit/1d0627d802c59130c82478a4eb7f14014064eae5"}, {"name": "https://github.com/ntop/ntopng/commit/669589fe208fc932fe40a840e0de8e4d9df6023f", "tags": ["x_refsource_MISC"], "url": "https://github.com/ntop/ntopng/commit/669589fe208fc932fe40a840e0de8e4d9df6023f"}], "affected": [{"vendor": "ntop", "product": "ntopng", "versions": [{"version": "< 6.7.260717", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-21T16:08:23.333Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-ffg5-889g-f5q8", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-21T19:40:33.282816Z", "id": "CVE-2026-83621", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-21T20:45:33.312Z"}}]}}

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{"affected": [{"affectedData": [{"product": "ntopng", "vendor": "ntop", "versions": [{"status": "affected", "version": "< 6.7.260717"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-83621", "lastModified": "2026-09-23T17:17:50.090", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-83621", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-21T19:40:33.282816Z", "version": "2.0.3"}}]}, "published": "2026-09-21T17:19:08.590", "references": [{"source": "security-advisories@github.com", "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"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.7.260717)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "ntopng", "source": "cna", "vendor": "ntop"}, "product": "ntopng", "vendor": "ntop"}], "created": "2026-09-21T17:45:17.596352+00:00", "updated": "2026-09-21T17:45:17.770406+00:00", "vendors": ["ntop", "ntop$PRODUCT$ntopng"]}