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Advisory record · GHSA-w737-wx49-qj23

Micrometer gRPC server instrumentation DoS

CVSS 7.5 HighEPSS 0.0063 · 50th percentile

Published by the GitHub Advisory Database at 9 Jun 2026, 06:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
io.micrometer:micrometer-coreMaven>=1.16.0, <1.16.6 || >=1.15.0, <1.15.121.16.6, 1.15.12
Identifiers
GHSA-w737-wx49-qj23 · CVE-2026-40983
Weakness (CWE)
CWE-400 · CWE-770
Tags
Published
9 Jun 2026
Updated
11 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Micrometer (io.micrometer:micrometer-core) versions 1.16.0 through 1.16.5 and 1.15.0 through 1.15.11 are vulnerable. A user who can send specially crafted gRPC requests to an affected service can cause a denial-of-service condition. The source gives few details about the exact mechanism. Upgrade to micrometer-core 1.16.6 or 1.15.12, depending on the release line in use.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.5 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CNA (vmware)
  • CISA KEV Not listed.
  • EPSS 0.0063, the 50th percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:16 UTC First seen by agentprime
  2. 31 Oct 2026, 14:16 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.