CVE-2026-59295Network attack vector

Application crash via unreleased asynchronous request tracking

Published Aug 24, 2026 · Updated Aug 24, 2026

Denial of service in affected Micrometer Core releases allows remote attackers to crash applications through failed asynchronous requests. MicrometerHttpClientInterceptor retains tracking state when an Apache HttpAsyncClient request fails before receiving a response, so repeated failures grow the JVM heap without bound. The application must use the interceptor and contact a hostile or unreliable endpoint; sustained resets, timeouts, or socket failures end in OutOfMemoryError.

CVSS severity5.9
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in affected Micrometer Core releases allows remote attackers to crash applications through failed asynchronous requests. MicrometerHttpClientInterceptor retains tracking state when an Apache HttpAsyncClient request fails before receiving a response, so repeated failures grow the JVM heap without bound. The application must use the interceptor and contact a hostile or unreliable endpoint; sustained resets, timeouts, or socket failures end in OutOfMemoryError.

The record

CVE
CVE-2026-59295
Published
Aug 24, 2026
Updated
Aug 24, 2026
Vendor
VMware
Product
Micrometer Core
Classifications
CWE-401, T1499.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.9.18
  2. Affected versionversion=1.14.0 <=1.14.16
  3. Affected versionversion=1.15.0 <=1.15.12
  4. Affected versionversion=1.16.0 <=1.16.6
  5. Affected versionversion=1.17.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

VMware · Micrometer Coreversion=0 <=1.9.18; version=1.14.0 <=1.14.16; version=1.15.0 <=1.15.12; version=1.16.0 <=1.16.6; version=1.17.0

Published CVSS scores

5.9VMwareCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
T1499.003Application Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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