vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2026-26931

Memory Allocation with Excessive Size Value in Metricbeat Leading to Denial of Service

MEDIUM
5.7
CVSS Score
Published: March 19, 2026 at 05:05 PM UTC
Updated: September 4, 2026 at 03:36 PM UTC
1 product affected across 1 vendorMetricbeat

Using Metricbeat by Elastic?

Get instant alerts when new vulnerabilities affect Metricbeat - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
MEDIUM5.7
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

Memory Allocation with Excessive Size Value (CWE-789) in the Prometheus remote_write HTTP handler in Metricbeat can lead Denial of Service via Excessive Allocation (CAPEC-130).

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Metricbeat· Elasticelastic-plugin
95%
8.0.0 ≤ v ≤ 8.19.128.0.0 ≤ v < 8.19.139.0.0 ≤ v < 9.2.58.0.0
Affected range stops below 8.19.13, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.2.5, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

MitigationVendor Advisory
Source: cverecord
https://discuss.elastic.co/t/metricbeat-8-19-13-9-2-5-security-update-esa-2026-09/385532

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.7MEDIUMelastic
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-789

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card