{"id":"CVE-2026-83603","state":"PUBLISHED","title":"Netdata: Local Root via ndsudo Arbitrary socket_path → fail2ban-client Pickle RCE","description":"Netdata is an open source observability tool. Prior to 2.10.4, the setuid-root ndsudo helper command fail2ban-client-status-socket in src/collectors/utils/ndsudo.c accepts a caller-controlled --socket_path from the low-privileged netdata service account. The account can direct root fail2ban-client to a malicious UNIX socket, and fail2ban/client/csocket.py CSocket.receive() passes the returned data to pickle.loads(), allowing attacker-controlled code to execute as root on systems with fail2ban-client installed. This issue is fixed in version 2.10.4 and nightly build 2.10.0-782-nightly.","publishedAt":"2026-09-22T17:01:56.465Z","updatedAt":"2026-09-22T17:43:23.328Z","severity":{"score":8.4,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["netdata netdata"],"affected":[{"vendor":"netdata","product":"netdata","versions":[{"version":"< 2.10.4","status":"affected"}]}],"references":["https://github.com/netdata/netdata/security/advisories/GHSA-qwh9-pq27-993w","https://github.com/netdata/netdata/pull/22745","https://github.com/netdata/netdata/commit/9bced8d46464bd0fe01b0b5f8c63c4ac24e9b060","https://github.com/netdata/netdata/releases/tag/v2.10.4"],"weaknesses":["CWE-73","CWE-502"],"ingestedAt":"2026-10-29T20:13:15.269Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/83xxx/CVE-2026-83603.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-83603","state":"PUBLISHED","datePublished":"2026-09-22T17:01:56.465Z","dateUpdated":"2026-09-22T17:43:23.328Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-08-31T20:36:25.743Z"},"containers":{"cna":{"title":"Netdata: Local Root via ndsudo Arbitrary socket_path → fail2ban-client Pickle RCE","descriptions":[{"lang":"en","value":"Netdata is an open source observability tool. Prior to 2.10.4, the setuid-root ndsudo helper command fail2ban-client-status-socket in src/collectors/utils/ndsudo.c accepts a caller-controlled --socket_path from the low-privileged netdata service account. The account can direct root fail2ban-client to a malicious UNIX socket, and fail2ban/client/csocket.py CSocket.receive() passes the returned data to pickle.loads(), allowing attacker-controlled code to execute as root on systems with fail2ban-client installed. This issue is fixed in version 2.10.4 and nightly build 2.10.0-782-nightly."}],"affected":[{"vendor":"netdata","product":"netdata","versions":[{"version":"< 2.10.4","status":"affected"}]}],"references":[{"url":"https://github.com/netdata/netdata/security/advisories/GHSA-qwh9-pq27-993w","name":"https://github.com/netdata/netdata/security/advisories/GHSA-qwh9-pq27-993w","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/netdata/netdata/pull/22745","name":"https://github.com/netdata/netdata/pull/22745","tags":["x_refsource_MISC"]},{"url":"https://github.com/netdata/netdata/commit/9bced8d46464bd0fe01b0b5f8c63c4ac24e9b060","name":"https://github.com/netdata/netdata/commit/9bced8d46464bd0fe01b0b5f8c63c4ac24e9b060","tags":["x_refsource_MISC"]},{"url":"https://github.com/netdata/netdata/releases/tag/v2.10.4","name":"https://github.com/netdata/netdata/releases/tag/v2.10.4","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":8.4,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-73","lang":"en","description":"CWE-73: External Control of File Name or Path","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-502","lang":"en","description":"CWE-502: Deserialization of Untrusted Data","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-22T17:01:56.465Z"},"source":{"advisory":"GHSA-qwh9-pq27-993w","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-22T17:35:38.430711Z","id":"CVE-2026-83603","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-22T17:43:23.328Z"}}]}}}