High

Micrometer gRPC server instrumentation DoS

Disclosed: 09.06.2026
Updated: 11.10.2026 13:20

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

Click a technology to see all vulnerabilities affecting it.

Platform	Package	Vulnerable versions	Fixed in
Java / Kotlin (Maven)	io.micrometer:micrometer-core	>= 1.16.0, < 1.16.6, >= 1.15.0, < 1.15.12	1.16.6, 1.15.12

References

CVSS score 7.5/10

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-400, CWE-770
Platform: Java / Kotlin (Maven)
Package: io.micrometer:micrometer-core
Disclosed: 09.06.2026
Updated: 11.10.2026 13:20

Sources and licenses

OSV / GitHub Advisory Database - GHSA-w737-wx49-qj23 - CC BY 4.0

Vulnerability history: io.micrometer:micrometer-core

All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries: 2
First → latest: 06.2026 06.2026
Without a fix: 0
Exploited in attacks: 0

Severity breakdown

High 2

Disclosures per year

2026: 2

09.06.2026

Micrometer gRPC server instrumentation DoS this entry

High · 7.5 CVE-2026-40983 >= 1.16.0, < 1.16.6, >= 1.15.0, < 1.15.12 1.16.6, 1.15.12
09.06.2026

Micrometer HTTP server instrumentations DoS

High · 7.5 CVE-2026-40984 >= 1.16.0, < 1.16.6, >= 1.15.0, < 1.15.12, >= 1.14.0, <= 1.14.14, >= 1.10.0, <= 1.13.15, <= 1.9.17 1.16.6, 1.15.12

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