Micrometer gRPC server instrumentation DoS vulnerability
Priority MEDIUM 40CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 10 fixed, 6 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-400.
Summary
In Micrometer, it is possible for a user to provide specially crafted gRPC requests that may cause a denial-of-service (DoS) condition. Affected versions: Micrometer 1.16.0 through 1.16.5; 1.15.0 through 1.15.11.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00631 50th percentileScored 2026-11-07
Fix Partial Micrometer (Spring): 1.16.5.1, 1.15.11.1io.micrometer:micrometer-core (Maven): 1.16.6, 1.15.12Red Hat: 10 advisoriesRed Hat: 10 fixed, 6 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| VMware | Micrometer | 1.16.0 to before 1.16.5.1; 1.15.0 to before 1.15.11.1 | 1.16.5.1, 1.15.11.1 | Patch available | CNA |
| — | io.micrometer:micrometer-core (Maven) | 1.16.0 to before 1.16.6 | 1.16.6 | Patch available | GHSA-w737-wx49-qj23 |
| — | io.micrometer:micrometer-core (Maven) | 1.15.0 to before 1.15.12 | 1.15.12 | Patch available | GHSA-w737-wx49-qj23 |
- Micrometer VendorVMware Affected 1.16.0 to before 1.16.5.1; 1.15.0 to before 1.15.11.1 Fixed in 1.16.5.1, 1.15.11.1 Patch available CNA
- io.micrometer:micrometer-core (Maven) Vendor— Affected 1.16.0 to before 1.16.6 Fixed in 1.16.6 Patch available GHSA-w737-wx49-qj23
- io.micrometer:micrometer-core (Maven) Vendor— Affected 1.15.0 to before 1.15.12 Fixed in 1.15.12 Patch available GHSA-w737-wx49-qj23
Remediation
- Fix · CNA Micrometer (Spring) Fixed in 1.16.5.1, 1.15.11.1
- Fix · GHSA-w737-wx49-qj23 io.micrometer:micrometer-core (Maven) Fixed in 1.16.6 Advisory →
- Fix · GHSA-w737-wx49-qj23 io.micrometer:micrometer-core (Maven) Fixed in 1.15.12 Advisory →
Red Hat 10 advisories
- RHSA-2026:70421 Released 2026-09-22 · Red Hat rating ImportantRed Hat JBoss Enterprise Application Platform 8.1.8 XP 6.0.6.GA release
- Red Hat JBoss Enterprise Application Platform 8.1
- RHSA-2026:69459 Released 2026-09-21 · Red Hat rating ImportantAMQ Clients 2026.Q3
- AMQ Clients 2026.Q3
- RHSA-2026:66488 Released 2026-09-10 · Red Hat rating ImportantRed Hat AMQ Broker 7.14.1 release and security update
- Red Hat AMQ Broker 7.14.1
Show 7 more Red Hat advisories
- RHSA-2026:62260 Released 2026-09-01 · Red Hat rating ImportantRed Hat OpenShift Dev Spaces 3.30.0 Release.
- Red Hat OpenShift Dev Spaces 3.30 registry.redhat.io/devspaces/code-rhel9, registry.redhat.io/devspaces/configbump-rhel9, registry.redhat.io/devspaces/dashboard-rhel9 +7
- RHSA-2026:54435 Released 2026-08-12 · Red Hat rating ImportantStreams for Apache Kafka 3.2.1 release and security update
- Streams for Apache Kafka 3.2.1
- RHSA-2026:50849 Released 2026-08-05 · Red Hat rating ImportantRed Hat build of Keycloak 26.6.5 Images Security Update
- Red Hat build of Keycloak 26.6 rhbk/keycloak-operator-bundle, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9-operator
- RHSA-2026:50848 Released 2026-08-05 · Red Hat rating ImportantRed Hat build of Keycloak 26.6.5 Security Update
- Red Hat build of Keycloak 26.6.5
- RHSA-2026:41951 Released 2026-07-20 · Red Hat rating ImportantRed Hat Data Grid 8.6.2 security update
- Red Hat Data Grid 8.6.2
- RHSA-2026:36839 Released 2026-07-08 · Red Hat rating ImportantRed Hat Build of Apache Camel 4.18 for Quarkus 3.33 update is now available (RHBQ 3.33.2.SP2)
- Red Hat Build of Apache Camel 3.33.2.SP2 com.fasterxml.jackson.core.jackson-databind-2.21.4.redhat-00002.jar, io.micrometer.micrometer-core-1.16.6.redhat-00001.jar, org.apache.cxf.cxf-core-4.1.7.rhbac-redhat-00003.jar
- RHSA-2026:36013 Released 2026-07-08 · Red Hat rating ImportantRed Hat build of Quarkus 3.33.2.SP2 security update
- Red Hat build of Quarkus 3.33.2.SP2 com.fasterxml.jackson.core.jackson-databind-2.21.4.redhat-00002.jar, io.micrometer.micrometer-core-1.16.6.redhat-00001.jar, org.keycloak.keycloak-policy-enforcer-26.0.10.redhat-00001.jar
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Build of Keycloak | Affected | No fix yet |
| Red Hat Fuse 7 | Affected | No fix yet: Fix deferred |
| Red Hat JBoss Enterprise Application Platform Expansion Pack | Affected | No fix yet |
| Red Hat build of Apache Camel - HawtIO 4 | Affected | No fix yet |
| Red Hat build of Apache Camel 4 for Quarkus 3 | Affected | No fix yet |
| Red Hat build of Apicurio Registry 3 | Affected | No fix yet: Fix deferred |
| AMQ Clients 2026.Q3 | Fixed | RHSA-2026:69459 |
| Red Hat AMQ Broker 7.14.1 | Fixed | RHSA-2026:66488 |
| Red Hat Build of Apache Camel 3.33.2.SP2 | Fixed | RHSA-2026:36839 |
| Red Hat Data Grid 8.6.2 | Fixed | RHSA-2026:41951 |
| Red Hat JBoss Enterprise Application Platform 8.1 | Fixed | RHSA-2026:70421 |
| Red Hat OpenShift Dev Spaces 3.30 | Fixed | RHSA-2026:62260 |
| Red Hat build of Keycloak 26.6 | Fixed | RHSA-2026:50849 |
| Red Hat build of Keycloak 26.6.5 | Fixed | RHSA-2026:50848 |
| Red Hat build of Quarkus 3.33.2.SP2 | Fixed | RHSA-2026:36013 |
| Streams for Apache Kafka 3.2.1 | Fixed | RHSA-2026:54435 |
Not affected: 9 products
- Red Hat Build of Apache Camel 3.33.2.SP2
- Red Hat OpenShift AI (RHOAI)
- Red Hat OpenShift Dev Spaces
- Red Hat OpenShift Dev Spaces 3.30
- Red Hat Satellite 6
- Red Hat build of Apache Camel for Spring Boot 4
- Red Hat build of Debezium 3
- Red Hat build of Quarkus 3.33.2.SP2
- streams for Apache Kafka 2
Timeline
- 2026-10-02 Threatist record created from CVE-2026-40983
- 2026-10-03 Alias added: GHSA-w737-wx49-qj23
- 2026-10-09 Fix available: RHSA-2026:36013 · Red Hat
- 2026-10-09 Fix available: RHSA-2026:36839 · Red Hat
- 2026-10-13 Fix available: Red Hat Build of Apache Camel 4.18 for Quarkus 3.33, Red Hat build of Quarkus 3.33.2.SP2 · Red Hat
- 2026-10-18 Fix available: Red Hat Build of Apache Camel 3.33.2.SP2 · Red Hat
- 2026-10-20 Fix available: Red Hat JBoss Enterprise Application Platform 8.1 · Red Hat
- 2026-10-20 Fix available: RHSA-2026:70421 · Red Hat
- 2026-10-25 EPSS moved to the below the 50th percentile
- 2026-10-27 EPSS moved to the 50th–90th percentile
References
Other 12
- https://spring.io/security/cve-2026-40983
- https://access.redhat.com/errata/RHSA-2026:36839
- https://access.redhat.com/errata/RHSA-2026:41951
- https://access.redhat.com/errata/RHSA-2026:50848
- https://access.redhat.com/errata/RHSA-2026:50849
- https://access.redhat.com/errata/RHSA-2026:54435
- https://access.redhat.com/errata/RHSA-2026:62260
- https://access.redhat.com/errata/RHSA-2026:66488
- https://access.redhat.com/security/cve/CVE-2026-40983
- https://bugzilla.redhat.com/show_bug.cgi?id=2486697
- https://github.com/micrometer-metrics/micrometer
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40983.json
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Sources
- CVE-2026-40983 · CVE Program
- CVE-2026-40983 · NVD
- FIRST EPSS
- GHSA-w737-wx49-qj23 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-40983 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences