{"id":"UBUNTU-CVE-2026-83602","details":"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.","modified":"2026-09-24T02:01:04.665945219Z","published":"2026-09-22T17:17:00Z","upstream":["CVE-2026-83602"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-83602"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-83602"},{"type":"REPORT","url":"https://github.com/netdata/netdata/commit/0124f50bbcf36c23e798e2b76f021f5032ec93d4"},{"type":"REPORT","url":"https://github.com/netdata/netdata/pull/22896"},{"type":"REPORT","url":"https://github.com/netdata/netdata/releases/tag/v2.11.0"},{"type":"REPORT","url":"https://github.com/netdata/netdata/security/advisories/GHSA-8hjg-8hcf-fmwp"}],"affected":[{"package":{"name":"netdata","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/netdata?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7.0+dfsg-1","1.8.0+dfsg-1","1.9.0+dfsg-1","1.9.0+dfsg-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"netdata","binary_version":"1.9.0+dfsg-1ubuntu0.1~esm1"},{"binary_version":"1.9.0+dfsg-1ubuntu0.1~esm1","binary_name":"netdata-data"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-83602.json"}},{"package":{"name":"netdata","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/netdata?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.16.1-2","1.19.0-3ubuntu1","1.19.0-3ubuntu1+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"netdata","binary_version":"1.19.0-3ubuntu1+esm1"},{"binary_version":"1.19.0-3ubuntu1+esm1","binary_name":"netdata-apache2"},{"binary_name":"netdata-core","binary_version":"1.19.0-3ubuntu1+esm1"},{"binary_name":"netdata-plugins-bash","binary_version":"1.19.0-3ubuntu1+esm1"},{"binary_name":"netdata-plugins-nodejs","binary_version":"1.19.0-3ubuntu1+esm1"},{"binary_name":"netdata-plugins-python","binary_version":"1.19.0-3ubuntu1+esm1"},{"binary_name":"netdata-web","binary_version":"1.19.0-3ubuntu1+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-83602.json"}},{"package":{"name":"netdata","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/netdata?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.29.3-4","1.31.0-4","1.33.1-1ubuntu1","1.33.1-1ubuntu1+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"netdata","binary_version":"1.33.1-1ubuntu1+esm1"},{"binary_name":"netdata-apache2","binary_version":"1.33.1-1ubuntu1+esm1"},{"binary_name":"netdata-core","binary_version":"1.33.1-1ubuntu1+esm1"},{"binary_name":"netdata-plugins-bash","binary_version":"1.33.1-1ubuntu1+esm1"},{"binary_name":"netdata-plugins-nodejs","binary_version":"1.33.1-1ubuntu1+esm1"},{"binary_name":"netdata-plugins-python","binary_version":"1.33.1-1ubuntu1+esm1"},{"binary_name":"netdata-web","binary_version":"1.33.1-1ubuntu1+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-83602.json"}},{"package":{"name":"netdata","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/netdata?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.42.1-1","1.43.1-1","1.43.2-1","1.43.2-1build1","1.43.2-1build2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.43.2-1build2","binary_name":"netdata"},{"binary_version":"1.43.2-1build2","binary_name":"netdata-apache2"},{"binary_version":"1.43.2-1build2","binary_name":"netdata-core"},{"binary_name":"netdata-plugins-bash","binary_version":"1.43.2-1build2"},{"binary_version":"1.43.2-1build2","binary_name":"netdata-plugins-python"},{"binary_name":"netdata-web","binary_version":"1.43.2-1build2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-83602.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L"},{"type":"Ubuntu","score":"medium"}]}