CVE-2026-40984 — Vulnerability in io.micrometer:micrometer-core —...
HIGH
Micrometer HTTP server instrumentations DoS
Published June 9, 2026Updated September 11, 2026Source: osv
Summary
In Micrometer, it is possible for a user to provide specially crafted HTTP requests that may cause a denial-of-service (DoS) condition.
Affected versions:
micrometer-core 1.16.0 through 1.16.5; 1.15.0 through 1.15.11; 1.14.0 through 1.14.15; 1.13.0 through 1.13.18; 1.9.0 through 1.9.17.
micrometer-jetty11 1.16.0 through 1.16.5; 1.15.0 through 1.15.11; 1.14.0 through 1.14.15; 1.13.0 through 1.13.18.
micrometer-jetty12 1.16.0 through 1.16.5; 1.15.0 through 1.15.11; 1.14.0 through 1.14.15; 1.13.0 through 1.13.18.
Advisory Timeline
- First published June 9, 2026 (125 days ago).
- Last revised September 11, 2026 — 94 days after initial publication.
Remediation
Upgrade to the fixed version using your package manager.
Maven
Update io.micrometer:micrometer-core to 1.15.12 or later<!-- Update pom.xml dependency version to 1.15.12 for io.micrometer:micrometer-core -->
Maven
Update io.micrometer:micrometer-core to 1.16.6 or later<!-- Update pom.xml dependency version to 1.16.6 for io.micrometer:micrometer-core -->
Maven
Update io.micrometer:micrometer-jetty12 to 1.16.6 or later<!-- Update pom.xml dependency version to 1.16.6 for io.micrometer:micrometer-jetty12 -->
Maven
Update io.micrometer:micrometer-jetty11 to 1.16.6 or later<!-- Update pom.xml dependency version to 1.16.6 for io.micrometer:micrometer-jetty11 -->
Maven
Update io.micrometer:micrometer-jetty11 to 1.15.12 or later<!-- Update pom.xml dependency version to 1.15.12 for io.micrometer:micrometer-jetty11 -->
Maven
Update io.micrometer:micrometer-jetty12 to 1.15.12 or later<!-- Update pom.xml dependency version to 1.15.12 for io.micrometer:micrometer-jetty12 -->
After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.
Affected Packages (13)
Affects 1 ecosystem: maven (3).
| Package | Ecosystem | Affected | Fixed In |
|---|---|---|---|
| io.micrometer:micrometer-core | maven | 1.15.0, 1.15.1, 1.15.10, 1.15.11 (+8 more) | 1.15.12 |
| io.micrometer:micrometer-core | maven | 0.10.0.RELEASE, 0.11.0.RELEASE, 0.12.0.RELEASE, 0.6.3.RELEASE (+149 more) | Range-based data available |
| io.micrometer:micrometer-jetty11 | maven | 1.10.0, 1.10.1, 1.10.10, 1.10.11 (+53 more) | Range-based data available |
| io.micrometer:micrometer-jetty12 | maven | 1.14.0, 1.14.1, 1.14.10, 1.14.11 (+11 more) | Range-based data available |
| io.micrometer:micrometer-core | maven | 1.10.0, 1.10.1, 1.10.10, 1.10.11 (+53 more) | Range-based data available |
| io.micrometer:micrometer-core | maven | 1.16.0, 1.16.1, 1.16.2, 1.16.3 (+2 more) | 1.16.6 |
| io.micrometer:micrometer-jetty12 | maven | 1.16.0, 1.16.1, 1.16.2, 1.16.3 (+2 more) | 1.16.6 |
| io.micrometer:micrometer-core | maven | 1.14.0, 1.14.1, 1.14.10, 1.14.11 (+11 more) | Range-based data available |
| io.micrometer:micrometer-jetty11 | maven | 1.16.0, 1.16.1, 1.16.2, 1.16.3 (+2 more) | 1.16.6 |
| io.micrometer:micrometer-jetty11 | maven | 1.15.0, 1.15.1, 1.15.10, 1.15.11 (+8 more) | 1.15.12 |
| io.micrometer:micrometer-jetty12 | maven | 1.13.0, 1.13.1, 1.13.10, 1.13.11 (+12 more) | Range-based data available |
| io.micrometer:micrometer-jetty11 | maven | 1.14.0, 1.14.1, 1.14.10, 1.14.11 (+11 more) | Range-based data available |
| io.micrometer:micrometer-jetty12 | maven | 1.15.0, 1.15.1, 1.15.10, 1.15.11 (+8 more) | 1.15.12 |
Vulnerability Classification
Common Weakness Enumeration (CWE) identifiers for this vulnerability type.
CVSS Score Breakdown
What the CVSS (Common Vulnerability Scoring System) 7.5 score means for each attack dimension.
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-40984ADVISORY
- https://github.com/micrometer-metrics/micrometer/commit/36da131525228188a36779a28471a76c79213dd4WEB
- https://access.redhat.com/errata/RHSA-2026:36839WEB
- https://access.redhat.com/errata/RHSA-2026:37390WEB
- https://access.redhat.com/errata/RHSA-2026:41951WEB
- https://access.redhat.com/errata/RHSA-2026:50848WEB
- https://access.redhat.com/errata/RHSA-2026:50849WEB
- https://access.redhat.com/errata/RHSA-2026:54435WEB
- https://access.redhat.com/errata/RHSA-2026:62260WEB
- https://access.redhat.com/errata/RHSA-2026:66488WEB
- https://access.redhat.com/errata/RHSA-2026:66545WEB
- https://access.redhat.com/security/cve/CVE-2026-40984WEB
- https://bugzilla.redhat.com/show_bug.cgi?id=2486716WEB
- https://github.com/micrometer-metrics/micrometerPACKAGE
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40984.jsonWEB
- https://spring.io/security/cve-2026-40984WEB
Frequently Asked Questions
- What is CVE-2026-40984?
- Micrometer HTTP server instrumentations DoS This vulnerability has been assigned a severity rating of HIGH (CVSS score: 7.5/10).
- How do I check if my project is affected by CVE-2026-40984?
- CVE-2026-40984 affects io.micrometer:micrometer-core, io.micrometer:micrometer-jetty11 and io.micrometer:micrometer-jetty12. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-40984 and 200,000+ other known vulnerabilities.
Severity & Exploitability
CVSS Score
7.5
High exploitability or significant impact. Prioritize remediation within days.
Also Known As
GHSA-g3pr-3p32-fp23
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