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CVE-2026-83600— Netdata: Streaming protocol chart slot guard off-by-one allows ~16 GiB allocation request, crashing parent agent

Quick assessment

Affected
netdata netdata
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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

CVSS 6.5 · Medium

Affected Version Matrix 1

VendorProduct Version RangeStatus
netdata netdata < 2.10.4 affected
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I. Basic Information for CVE-2026-83600

Vulnerability Information

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Vulnerability Title
Netdata: Streaming protocol chart slot guard off-by-one allows ~16 GiB allocation request, crashing parent agent
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
Off-by-one错误
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
netdata netdata < 2.10.4 -

II. Public POCs for CVE-2026-83600

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III. Intelligence Information for CVE-2026-83600

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Other References for CVE-2026-83600 (4)

Same Patch Batch · netdata · 2026-09-22 · 7 CVEs total

CVE-2026-83603 8.4 HIGH Netdata: Local Root via ndsudo Arbitrary socket_path → fail2ban-client Pickle RCE
CVE-2026-83598 7.8 HIGH Netdata: Local Privilege Escalation in Netdata Agent Windows installer via PowerShell Prof
CVE-2026-83599 7.5 HIGH Netdata: WebSocket Decompression Bomb
CVE-2026-83597 7.0 HIGH Netdata: Local Privilege Escalation in Netdata Windows Agent installer via MSI Repair Exec
CVE-2026-83601 6.5 MEDIUM Netdata: Streaming protocol dimension slot has no upper-bound guard, allowing integer over
CVE-2026-83602 6.5 MEDIUM Netdata: Unauthenticated remote PUT to /api/v3/settings bypasses IP allowlist controls via

IV. Related Vulnerabilities

Same product: netdata
Same vendor: netdata
Same weakness: CWE-193

V. Comments for CVE-2026-83600

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