{"id":"CVE-2026-83602","title":"Netdata is an open source observability tool","summary":"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 b…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","cwe":["CWE-284"],"vendor":"netdata","product":"netdata","affected":["netdata >= 2.0.0, < 2.11.0"],"published":"2026-09-22","updated":"2026-09-22","sourceUpdated":"2026-09-22T17:17:26.393","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-83602","references":[{"url":"https://github.com/netdata/netdata/commit/0124f50bbcf36c23e798e2b76f021f5032ec93d4","label":"security-advisories@github.com"},{"url":"https://github.com/netdata/netdata/pull/22896","label":"security-advisories@github.com"},{"url":"https://github.com/netdata/netdata/releases/tag/v2.11.0","label":"security-advisories@github.com"},{"url":"https://github.com/netdata/netdata/security/advisories/GHSA-8hjg-8hcf-fmwp","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-22T17:07:07.378Z","slug":"CVE-2026-83602","body":"## Overview\n\nNetdata 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}