CVE-2026-83603
Publication date 22 September 2026
Last updated 24 September 2026
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| netdata | 26.04 LTS resolute | Not in release |
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
Severity score breakdown
CVSS version: CVSS v3.0
Base score
8.4 · High
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-83603
- https://github.com/netdata/netdata/commit/9bced8d46464bd0fe01b0b5f8c63c4ac24e9b060
- https://github.com/netdata/netdata/pull/22745
- https://github.com/netdata/netdata/releases/tag/v2.10.4
- https://github.com/netdata/netdata/security/advisories/GHSA-qwh9-pq27-993w