Allocation of Resources Without Limits or Throttling Affecting io.micrometer:micrometer-core package, versions [1.15.0-M2,1.15.12)[1.16.0-M1,1.16.6)
Threat Intelligence
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The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published15 Jun 2026
- disclosed9 Jun 2026
- creditYu Bao
Introduced: 9 Jun 2026
CVE-2026-40983 (opens in a new tab)How to fix?
Upgrade io.micrometer:micrometer-core to version 1.15.12, 1.16.6 or higher.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the gRPC server instrumentation. An attacker can cause service disruption by sending specially crafted gRPC requests.
Note:
This issue is exploitable if an ObservationRegistry is configured in the application and it records observations; DefaultMeterObservationHandler is configured to output metrics from Observations or the user has a custom ObservationHandler that outputs metrics similarly to DefaultMeterObservationHandler; the application uses ObservationGrpcServerInterceptor to instrument its gRPC server.