{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-83602","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-08-31T20:36:25.743Z","datePublished":"2026-09-22T16:56:56.878Z","dateUpdated":"2026-09-28T19:29:02.173Z"},"containers":{"cna":{"title":"Netdata: Unauthenticated remote PUT to /api/v3/settings bypasses IP allowlist controls via HTTP_ACL_NOCHECK","problemTypes":[{"descriptions":[{"cweId":"CWE-284","lang":"en","description":"CWE-284: Improper Access Control","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","version":"3.1"}}],"references":[{"name":"https://github.com/netdata/netdata/security/advisories/GHSA-8hjg-8hcf-fmwp","tags":["x_refsource_CONFIRM"],"url":"https://github.com/netdata/netdata/security/advisories/GHSA-8hjg-8hcf-fmwp"},{"name":"https://github.com/netdata/netdata/pull/22896","tags":["x_refsource_MISC"],"url":"https://github.com/netdata/netdata/pull/22896"},{"name":"https://github.com/netdata/netdata/commit/0124f50bbcf36c23e798e2b76f021f5032ec93d4","tags":["x_refsource_MISC"],"url":"https://github.com/netdata/netdata/commit/0124f50bbcf36c23e798e2b76f021f5032ec93d4"},{"name":"https://github.com/netdata/netdata/releases/tag/v2.11.0","tags":["x_refsource_MISC"],"url":"https://github.com/netdata/netdata/releases/tag/v2.11.0"}],"affected":[{"vendor":"netdata","product":"netdata","versions":[{"version":">= 2.0.0, < 2.11.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-22T16:56:56.878Z"},"descriptions":[{"lang":"en","value":"Netdata is an open source observability tool. From 2.0.0 until 2.11.0, Netdata registers /api/v3/settings in src/web/api/v3/web_api_v3.c with HTTP_ACL_NOCHECK and HTTP_ACCESS_ANONYMOUS_DATA, causing unauthenticated PUT requests handled by src/web/api/v3/api_v3_settings.c to bypass operator-configured allow dashboard from IP restrictions. A network-reachable caller can persist attacker-controlled JSON in {varlib}/settings/default.json, manipulate its version counter, and use repeated near-20 MiB writes to consume disk space, although the file does not control collection or security policy. This vulnerability is fixed in 2.11.0."}],"source":{"advisory":"GHSA-8hjg-8hcf-fmwp","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/netdata/netdata/security/advisories/GHSA-8hjg-8hcf-fmwp","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-28T19:28:42.778057Z","id":"CVE-2026-83602","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"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":"2026-09-28T19:29:02.173Z"}}]}}