CVE-2026-40983: Micrometer gRPC server instrumentation DoS vulnerability
Published Jun 9, 2026
·Updated
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.
Affected Software
3 affected components
Micrometer Micrometer>=1.16.0<=1.16.5
Micrometer Micrometer>=1.15.0<=1.15.11
IBM Observability with Instana (Agent)<=Build 1.0.303 to 1.0.320
Event History
Jun 9, 2026
CVE Published
via MITRE·03:46 AM
Data Sourced
via MITRE·03:46 AM
DescriptionSeverityWeakness
Data Sourced
via Red Hat·05:01 AM
DescriptionSeverityAffected Software
Data Sourced
via NVD·05:16 AM
DescriptionSeverityWeakness
Jul 27, 2026
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software
Frequently Asked Questions
1
What is CVE-2026-40983?
CVE-2026-40983 is a denial-of-service vulnerability in Micrometer, which can be exploited using specially crafted gRPC requests.
2
What is the severity of CVE-2026-40983?
The severity of CVE-2026-40983 is rated high, with a score of 7.5.
3
How do I fix CVE-2026-40983?
To fix CVE-2026-40983, upgrade Micrometer to version 1.16.6 or higher, or to 1.15.12 or higher.
4
Which versions are affected by CVE-2026-40983?
CVE-2026-40983 affects Micrometer versions 1.16.0 through 1.16.5 and 1.15.0 through 1.15.11.
5
What is the impact of CVE-2026-40983?
The impact of CVE-2026-40983 is a potential denial-of-service condition, which may disrupt service availability.