CVE-2026-83600
Netdata is an open source observability tool.
Does this matter?
Lower severity and a low EPSS score (0.55%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.55% probability · 46th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-193, CWE-400
- Source
- security-advisories@github.com
EPSS moved from 0.5% on 23 September 2026 to 0.5% on 26 October 2026.
References
- https://github.com/netdata/netdata/commit/034a774f689ac01488fc261ca729ce0875819b1b
- https://github.com/netdata/netdata/pull/22598
- https://github.com/netdata/netdata/releases/tag/v2.10.4
- https://github.com/netdata/netdata/security/advisories/GHSA-3mxw-fv2x-rhc6
- https://github.com/netdata/netdata/security/advisories/GHSA-3mxw-fv2x-rhc6
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.