Micrometer 1.15/1.16 gRPC DoS via crafted requests
CVE-2026-40983 Published on June 9, 2026
Micrometer gRPC server instrumentation DoS vulnerability
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.
Vulnerability Analysis
CVE-2026-40983 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is a Resource Exhaustion Vulnerability?
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.
CVE-2026-40983 has been classified to as a Resource Exhaustion vulnerability or weakness.
Products Associated with CVE-2026-40983
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Affected Versions
Spring Micrometer:- Version 1.16.0 and below 1.16.6 is affected.
- Version 1.15.0 and below 1.15.12 is affected.