7.5

CVE-2026-0528: Improper Input Validation in Metricbeat Leading to Denial of Service

Analyzed
AliasesGHSA-w2gr-585j-r428GO-2026-4360CGA-23f3-7g4x-73rw
Published 13-01-2026Last modified 13-01-2026

Vulnerability summary

CVE-2026-0528 is a high (CVSS 7.5) Improper Validation of Array Index vulnerability in elastic kibana. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 36.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.5, adjacent network); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.43%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 3
OPENSUSE-SU-2026:21483-1SUSE-SU-2026:1042-1CGA-CF6X-5QCJ-8H59

Timeline

  1. 13-01-2026
    PublishedVulnerability first disclosed.
  2. 13-01-2026
    Last modifiedVulnerability information updated.

Description

Improper Validation of Array Index (CWE-129) exists in Metricbeat can allow an attacker to cause a Denial of Service through Input Data Manipulation (CAPEC-153) via specially crafted, malformed payloads sent to the Graphite server metricset or Zookeeper server metricset. Additionally, Improper Input Validation (CWE-20) exists in the Prometheus helper module that can allow an attacker to cause a Denial of Service through Input Data Manipulation (CAPEC-153) via specially crafted, malformed metric data.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.43%

Chance of exploitation in the next 30 days

Percentile

37%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.42% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: adjacent network, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard103 products
  • agentbeatAll versions (No fix recorded)
  • agentbeat-fipsAll versions (No fix recorded)
  • apm-server-8.17All versions (No fix recorded)
  • apm-server-8.18All versions (No fix recorded)
  • apm-server-8.19< 8.19.11-r0
Elastic2 products
  • kibana≥ 7.0.0, < 7.17.29 | ≥ 8.0.0, < 8.19.10 | ≥ 9.0.0, < 9.1.10 | ≥ 9.2.0, < 9.2.4
  • metricbeat≥ 7.0.0, ≤ 7.17.29 | ≥ 8.0.0, ≤ 8.19.9 | ≥ 9.0.0, ≤ 9.1.9 | ≥ 9.2.0, ≤ 9.2.3
Github.com/elastic1 product
  • beatsAll versions (No fix recorded)
Github.com/elastic/beats1 product
  • v7≥ 8.0.0, < 8.19.10 | ≥ 9.0.0, < 9.1.10 | ≥ 9.2.0, < 9.2.4 | < 7.0.0-alpha2.0.20251217054608-6e42552a23ce

4 vendors · 107 products

References

8 links