{"id":"CVE-2026-83602","revision":"0099479710a5449cac5215e52fc27cd7","records":[{"revision":"0099479710a5449cac5215e52fc27cd7","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-83602","aliases":[],"title":"Netdata: Unauthenticated remote PUT to /api/v3/settings bypasses IP allowlist controls via HTTP_ACL_NOCHECK","description":"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.","state":0,"publishedAt":"2026-09-22T16:56:56.878+00:00","modifiedAt":"2026-09-28T19:29:02.173+00:00","affected":[{"ecosystem":"Vendor product","name":"netdata","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"netdata\",\n                    \"product\": \"netdata\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 2.0.0, < 2.11.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/netdata/netdata/security/advisories/GHSA-8hjg-8hcf-fmwp","https://github.com/netdata/netdata/pull/22896","https://github.com/netdata/netdata/commit/0124f50bbcf36c23e798e2b76f021f5032ec93d4","https://github.com/netdata/netdata/releases/tag/v2.11.0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-83602","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-83602","identifiers":["CVE-2026-83602"]},"retained":false,"historicalAffected":[]}],"coverage":[]}