{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-83603 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-83603 is a high-severity unsafe deserialization vulnerability in netdata, published on 22 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-83603 and fix it if it is affected.\n\nWhat it is: CVE-2026-83603 is a high-severity unsafe deserialization vulnerability in netdata, published on 22 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-83603 in the wild and no public exploit code.\n\nAffected product: netdata. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-83603/ (Markdown: https://insights.sbomify.com/CVE-2026-83603/index.md)","id":"CVE-2026-83603","markdown":"https://insights.sbomify.com/CVE-2026-83603/index.md","name":"CVE-2026-83603","record":{"aliases":["DEBIAN-CVE-2026-83603","GHSA-qwh9-pq27-993w","MINI-9355-ffhc-6gmq","MINI-p8jc-2842-wpwr","UBUNTU-CVE-2026-83603"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Netdata observability tool","requires_auth":"low_privilege","summary":"A local attacker can escalate privileges to root by manipulating a socket path to trigger unsafe deserialization in fail2ban-client via Netdata's ndsudo helper.","user_interaction":"not_required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.4,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-73","name":"External Control of File Name or Path"},{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-09-02","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-09-02T18:27:02Z","kind":"github_poc","ref":"https://github.com/OhWelp/CVE-2026-83603-LPE-PoC","stars":0,"title":"A PoC for ZDI-CAN-28834/CVE-2026-83603, which allows local privilege escalation using netdata and fail2ban-client"}],"tier":"poc_unverified"},"has_fix":true,"headline":"Netdata: Local Root via ndsudo Arbitrary socket_path → fail2ban-client Pickle RCE","id":"CVE-2026-83603","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"deserialization","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"xmldom: Attribute name injection via setAttribute() bypasses requireWellFormed","id":"CVE-2026-83605"},"packages":[],"prev":{"headline":"Netdata: Unauthenticated remote PUT to /api/v3/settings bypasses IP allowlist controls via HTTP_ACL_NOCHECK","id":"CVE-2026-83602"},"products":["netdata"],"published":"2026-09-22","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-22","vendors":["netdata"]},"summary":"A local attacker can escalate privileges to root by manipulating a socket path to trigger unsafe deserialization in fail2ban-client via Netdata's ndsudo helper.","url":"https://insights.sbomify.com/CVE-2026-83603/"}