CVE-2026-83600CWE-193CWE-400denial-of-service

CVE-2026-83600

Medium · published September 22, 2026

CVSS v3.1
6.5
EPSS
1%
Percentile
45.1
In the wild
Unconfirmed
What it is

Netdata is an open source observability tool. Prior to 2.10.4, an authenticated child agent can send an oversized CHART SLOT value that str2ull_encoded passes to pluginsd_rrdset_cache_put_to_slot in src/plugins.d/pluginsd_internals.h. The accepted slot drives reallocz to request an approximately 16 GiB chart-pointer array, and allocation failure invokes fatal and aborts the parent Netdata agent, repeatedly disabling centralized monitoring while stream access persists. This issue is fixed in version 2.10.4 and nightly build 2.10.0-782-nightly.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00548 · 45.1th percentile
Weaknesses
CWE-193 · Off-by-one Error; CWE-400 · Uncontrolled Resource Consumption
Published
2026-09-22T21:17Z
References (5)
https://github.com/netdata/netdata/commit/034a774f689ac01488fc261ca729ce0875819b1b · [email protected]https://github.com/netdata/netdata/pull/22598 · [email protected]https://github.com/netdata/netdata/releases/tag/v2.10.4 · [email protected]https://github.com/netdata/netdata/security/advisories/GHSA-3mxw-fv2x-rhc6 · [email protected]https://github.com/netdata/netdata/security/advisories/GHSA-3mxw-fv2x-rhc6 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 24 SEP 03:25Z
    EPSS moved — → 1%
    epss
  • 22 SEP 17:05Z
    Netdata: Streaming protocol chart slot guard off-by-one allows ~16 GiB allocation request, crashing parent agent
    cvelistv5