Is CVE-2026-83602 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-83602 being exploited in the wild.

How severe is CVE-2026-83602?

Medium severity, with a CVSS score of 6.5, published 22 September 2026.

Is there a fix for CVE-2026-83602?

A patch was published on 2026-07-09: Fix merged to master via PR #22896, released in 2.11.0 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-83602 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-83602?

Check whether you run Netdata at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-83602: Netdata API access control bypass in /api/v3/settings

CVE-2026-83602 · Severity: medium · CVSS 6.5 · Published 2026-09-22

Netdata, an open-source monitoring platform, exposes a settings configuration endpoint without proper authentication controls. An attacker on the network can send unauthenticated requests to modify stored settings and consume disk space by writing large files, bypassing IP-based access restrictions that administrators intended to enforce.

Technologies: Netdata. Vendors: Netdata.

Quick answers

Is CVE-2026-83602 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-83602 being exploited in the wild.
How severe is CVE-2026-83602?: Medium severity, with a CVSS score of 6.5, published 22 September 2026.
Which products and versions are affected?: Netdata 2.0.0 to 2.10.x.
Is there a fix for CVE-2026-83602?: A patch was published on 2026-07-09: Fix merged to master via PR #22896, released in 2.11.0 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-83602 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-83602?: Check whether you run Netdata at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The /api/v3/settings endpoint in Netdata 2.0.0 through 2.10.x was registered with HTTP_ACL_NOCHECK and HTTP_ACCESS_ANONYMOUS_DATA, allowing unauthenticated PUT requests to bypass IP allowlists configured via the dashboard access policy. An attacker can persist arbitrary JSON to {varlib}/settings/default.json, manipulate version counters, and perform repeated ~20 MiB writes for disk exhaustion, though this does not affect collection or security policies.

Affected products

Netdata Netdata 2.0.0 to 2.10.x

Timeline

2026-09-22: disclosed
2026-07-09: patched: Fix merged to master via PR #22896, released in 2.11.0

References

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