Micrometer gRPC server instrumentation DoS vulnerability
Summary
| CVE | CVE-2026-40983 |
|---|---|
| State | PUBLISHED |
| Assigner | vmware |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-06-09 05:16:34 UTC |
| Updated | 2026-07-23 08:10:00 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v3.1 7.5 HIGH from ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.004740000 probability, percentile 0.380270000 (date 2026-07-21)
Problem Types: CWE-400 | CWE-770 | CWE-400 CWE-400: Uncontrolled Resource Consumption | CWE-770 Allocation of Resources Without Limits or Throttling
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | ADP | CVSS | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | [email protected] | Secondary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | Secondary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | CNA | CVSS | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Spring | Micrometer | affected 1.16.0 1.16.5.1 custom | Not specified |
| CNA | Spring | Micrometer | affected 1.15.0 1.15.11.1 custom | Not specified |
| ADP | Red Hat | Red Hat Build Of Apache Camel 4.18 For Quarkus 3.33 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Data Grid 8.6.2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat AMQ Broker 7 | Not specified | Not specified |
| ADP | Red Hat | Red Hat AMQ Clients | Not specified | Not specified |
| ADP | Red Hat | Red Hat Build Of Apache Camel 4 For Quarkus 3 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Build Of Apache Camel For Spring Boot 4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Build Of Apache Camel - HawtIO 4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Build Of Apicurio Registry 3 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Build Of Debezium 3 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Build Of Keycloak | Not specified | Not specified |
| ADP | Red Hat | Red Hat Build Of Keycloak | Not specified | Not specified |
| ADP | Red Hat | Red Hat Build Of Keycloak | Not specified | Not specified |
| ADP | Red Hat | Red Hat Build Of Keycloak | Not specified | Not specified |
| ADP | Red Hat | Red Hat Build Of Keycloak | Not specified | Not specified |
| ADP | Red Hat | Red Hat Build Of Quarkus | Not specified | Not specified |
| ADP | Red Hat | Red Hat Fuse 7 | Not specified | Not specified |
| ADP | Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Dev Spaces | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Dev Spaces | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Dev Spaces | Not specified | Not specified |
| ADP | Red Hat | Red Hat Satellite 6 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Satellite 6 | Not specified | Not specified |
| ADP | Red Hat | Streams For Apache Kafka 2 | Not specified | Not specified |
| ADP | Red Hat | Streams For Apache Kafka 3 | Not specified | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| access.redhat.com/errata/RHSA-2026:36839 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| bugzilla.redhat.com/show_bug.cgi | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | bugzilla.redhat.com | |
| access.redhat.com/security/cve/CVE-2026-40983 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40983.json | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | security.access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:41951 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| spring.io/security/cve-2026-40983 | [email protected] | spring.io | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| ADP | 2026-06-09T05:00:52.290Z | Reported to Red Hat. |
| ADP | 2026-06-09T03:46:54.131Z | Made public. |
Solutions
ADP: RHSA-2026:36839: Red Hat Build of Apache Camel 4.18 for Quarkus 3.33
ADP: RHSA-2026:41951: Red Hat Data Grid 8.6.2
Workarounds
ADP: To mitigate this issue, restrict network access to services exposing Micrometer's gRPC endpoints to trusted clients only. Implement firewall rules to limit inbound connections to the specific ports used by gRPC. If gRPC functionality is not essential for the deployment, consider disabling it entirely to eliminate the attack vector. Any changes to network configurations or service settings may require a service restart to take effect, potentially impacting availability during the transition.
There are currently no legacy QID mappings associated with this CVE.