FKIE_CVE-2026-83602

Vulnerability from fkie_nvd - Published: 2026-09-22 17:17 - Updated: 2026-09-28 20:17
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Summary
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.
References
security-advisories@github.comhttps://github.com/netdata/netdata/commit/0124f50bbcf36c23e798e2b76f021f5032ec93d4
security-advisories@github.comhttps://github.com/netdata/netdata/pull/22896
security-advisories@github.comhttps://github.com/netdata/netdata/releases/tag/v2.11.0
security-advisories@github.comhttps://github.com/netdata/netdata/security/advisories/GHSA-8hjg-8hcf-fmwp
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/netdata/netdata/security/advisories/GHSA-8hjg-8hcf-fmwp
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "netdata",
          "vendor": "netdata",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 2.0.0, \u003c 2.11.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "id": "CVE-2026-83602",
  "lastModified": "2026-09-28T20:17:10.933",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.5,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-83602",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-28T19:28:42.778057Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-22T17:17:26.393",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/netdata/netdata/commit/0124f50bbcf36c23e798e2b76f021f5032ec93d4"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/netdata/netdata/pull/22896"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/netdata/netdata/releases/tag/v2.11.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/netdata/netdata/security/advisories/GHSA-8hjg-8hcf-fmwp"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/netdata/netdata/security/advisories/GHSA-8hjg-8hcf-fmwp"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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