CVE-2026-83603

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Source
https://cve.org/CVERecord?id=CVE-2026-83603
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-83603.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-83603
Aliases
  • GHSA-qwh9-pq27-993w
Downstream
Published
2026-09-22T17:01:56Z
Modified
2026-09-25T08:24:15Z
Severity
  • 8.4 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N CVSS Calculator
Summary
Netdata: Local Root via ndsudo Arbitrary socket_path → fail2ban-client Pickle RCE
Details

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.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-502",
        "CWE-73"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/83xxx/CVE-2026-83603.json"
}
References

Affected packages

Git / github.com/netdata/netdata

Affected ranges

Type
GIT
Repo
https://github.com/netdata/netdata
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
9bced8d46464bd0fe01b0b5f8c63c4ac24e9b060
Fixed
245283237171400672a9ad914f5785ba8bc0fa5c
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "2.10.4"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

1.*
1.32.1
1.34.0
Other
untagged-10d59b9e5fa68b9500e1
v0.*
v0.1
v0.2
v1.*
v1.0.0
v1.0rc
v1.1.0
v1.10.0
v1.11.0
v1.11.1
v1.12.0
v1.12.0-rc0
v1.12.0-rc1
v1.12.0-rc2
v1.12.0-rc3
v1.12.1
v1.12.2
v1.13.0
v1.14.0
v1.14.0-rc0
v1.15.0
v1.16.0
v1.16.1
v1.17.0
v1.17.1
v1.18.0
v1.18.1
v1.19.0
v1.2.0
v1.20.0
v1.21.0
v1.21.1
v1.22.0
v1.22.1
v1.23.0
v1.23.1
v1.23.1_infiniband
v1.23.2
v1.24.0
v1.25.0
v1.26.0
v1.27.0
v1.27.0_0104103941
v1.28.0
v1.29.0
v1.29.1
v1.29.2
v1.29.3
v1.3.0
v1.30.0
v1.30.1
v1.31.0
v1.32.0
v1.32.1
v1.33.0
v1.33.1
v1.34.0
v1.35.0
v1.36.0
v1.37.0
v1.38.0
v1.39.0
v1.4.0
v1.40.0
v1.41.0
v1.42.0
v1.43.0
v1.44.0
v1.45.0
v1.46.0
v1.47.0
v1.5.0
v1.6.0
v1.7.0
v1.8.0
v1.9.0
v1.99.0
v2.*
v2.0.0
v2.1.0
v2.10.0
v2.10.1
v2.10.2
v2.10.3
v2.2.0
v2.3.0
v2.4.0
v2.5.0
v2.6.0
v2.7.0
v2.8.0
v2.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-83603.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "145502671235432794023844567434327174601",
                "304372119545992816617684381727583601007",
                "73450841204797344488191033477509041071",
                "197961079879052031371221752648773688265",
                "70713990567942265007864732196086641108",
                "22828932509653172035916910630643388984",
                "6267422522785001239350338372685845854",
                "183648796998145560939801182552564360690",
                "307918585819356045600218673644898913427",
                "101354288147399063875143168779890117314",
                "273237870677431648392506380041709126428"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2026-83603-319ac665",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/netdata/netdata/commit/9bced8d46464bd0fe01b0b5f8c63c4ac24e9b060",
        "target":  {
            "file":  "src/collectors/utils/ndsudo.c"
        }
    }
]
vanir_signatures_modified 
"2026-09-25T08:24:15Z"