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Fencer Vulns
medium 5.9

CVE-2026-59295 json

Micrometer instrumentation of Apache HttpAsyncClient DoS vulnerability

published 2026-08-24 2 mo ago modified 2026-10-12 28 d ago also EUVD-2026-64774

cvss
5.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits
0
none known

Summary

It is possible for outbound HTTP requests using a Micrometer-instrumented client to cause a denial-of-service (DoS) condition due to an unbounded memory leak. Micrometer 1.17.0 Micrometer 1.16.0 - 1.16.6 Micrometer 1.15.0 - 1.15.12 Micrometer 1.14.0 - 1.14.16 Micrometer 1.9.18 and earlier

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-59295 updated

io.micrometer/micrometer-core: Micrometer Instrumentation for Apache HttpAsyncClient: Denial of Service via asynchronous request failures

  • Red Hat AMQ Broker 7 micrometer-core
    affected: workaround, no fix available
  • Red Hat build of Quarkus 3.27.6.redhat micrometer-core 1.14.7.redhat-00003
    fixed: vendor fix RHSA-2026:83082
  • Red Hat build of Quarkus 3.33.4.redhat micrometer-core 1.16.7.redhat-00002
    fixed: vendor fix RHSA-2026:83520
  • Red Hat Exploit Intelligence exploit-intelligence/agent-client-rhel9 Red Hat build of Apache Camel 4 for Quarkus 3 micrometer-core Red Hat build of Apache Camel for Spring Boot 4 micrometer-core Red Hat build of Apicurio Registry 3 micrometer-core Red Hat build of Debezium 3 micrometer-core Red Hat Build of Keycloak micrometer-core, rhbk/keycloak-rhel9, keycloak/rhbk-rhel9-operator, rhbk/keycloak-rhel9-operator, keycloak/rhbk-openshift-rhel9
    +9 more products
    Red Hat build of Quarkus 3.27.6.redhat jna 5.8.0, db2 1.21.4, h2 2.3.230, y18n 5.0.8, cliui 8.0.1, guice 5.1.0, +1009 more Red Hat build of Quarkus 3.33.4.redhat jna 5.8.0, h2 2.4.240, y18n 5.0.8, cliui 8.0.1, guice 5.1.0, wasm 2.15.3, +1016 more Red Hat Data Grid 8 micrometer-core Red Hat Fuse 7 micrometer-core Red Hat JBoss Enterprise Application Platform 8 micrometer-core Red Hat JBoss Enterprise Application Platform Expansion Pack micrometer-core Red Hat OpenShift AI (RHOAI) rhoai/odh-trustyai-service-rhel9 Red Hat OpenShift Dev Spaces devspaces/server-rhel9, devspaces/openvsx-rhel9, devspaces/pluginregistry-rhel9 Red Hat Satellite 6 candlepin, candlepin-selinux
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 mo ago

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Spring Micrometer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.