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CVE-2026-40984Suited to automated attack · CISA

Micrometer HTTP server instrumentations DoS vulnerability

CVSS score

7.5

EPSS probability

%1.1

Risk score

0.1

Published

4 mo ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Official patch verified

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Vulnerability description

DayBreach CVE AI Research

CVE-2026-40984 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

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.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-40984 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1SpringMicrometer View
2SpringMicrometer View
3SpringMicrometer View
4mavenio.micrometer:micrometer-core View
5mavenio.micrometer:micrometer-core View
6mavenio.micrometer:micrometer-core View
7mavenio.micrometer:micrometer-core View
8mavenio.micrometer:micrometer-core View
9mavenio.micrometer:micrometer-jetty12 View
10mavenio.micrometer:micrometer-jetty12 View
11mavenio.micrometer:micrometer-jetty12 View
12mavenio.micrometer:micrometer-jetty12 View
13mavenio.micrometer:micrometer-jetty11 View
14mavenio.micrometer:micrometer-jetty11 View
15mavenio.micrometer:micrometer-jetty11 View
16mavenio.micrometer:micrometer-jetty11 View
17mavenio.micrometer:micrometer-jetty12 View
18mavenio.micrometer:micrometer-core View
19mavenio.micrometer:micrometer-core View
20mavenio.micrometer:micrometer-core View
21mavenio.micrometer:micrometer-jetty12 View
22mavenio.micrometer:micrometer-jetty12 View
23mavenio.micrometer:micrometer-jetty12 View
24mavenio.micrometer:micrometer-jetty11 View
25mavenio.micrometer:micrometer-jetty11 View
26mavenio.micrometer:micrometer-jetty11 View
Total affected vendors: 2|Products: 26

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
7.5CVSS V31HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HNVD
7.5CVSS V3_1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE CNA
7.5CVSS V3_1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE ADP
7.5CVSS 3.x—Vector not publishedGitHub Advisory
0.0CVSS 4.0—Vector not publishedGitHub Advisory

Patch and Remediation Guide

Solution & Remediation Advisory

Patch verified

8 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

osvio.micrometer:micrometer-core1.16.6

OSV düzeltilmiş sürüm: 1.16.6

osvio.micrometer:micrometer-core1.15.12

OSV düzeltilmiş sürüm: 1.15.12

osvio.micrometer:micrometer-jetty121.16.6

OSV düzeltilmiş sürüm: 1.16.6

osvio.micrometer:micrometer-jetty121.15.12

OSV düzeltilmiş sürüm: 1.15.12

osvio.micrometer:micrometer-jetty111.16.6

OSV düzeltilmiş sürüm: 1.16.6

osvio.micrometer:micrometer-jetty111.15.12

OSV düzeltilmiş sürüm: 1.15.12

gitlabmaven/io.micrometer/micrometer-jetty121.15.12

GitLab Advisory düzeltilmiş sürüm: 1.15.12

gitlabmaven/io.micrometer/micrometer-jetty121.16.6

GitLab Advisory düzeltilmiş sürüm: 1.16.6

gitlab

Upgrade to versions 1.15.12, 1.16.6 or above.

canonical

Upgrade to versions 1.15.12, 1.16.6 or above.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Apply the official update named in the evidence only to the matching product and version.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-40984 is associated with the following CWEs:

CWE-400: Common Weakness Enumeration Entry CWE-400CWE-770: Allocation of Resources Without Limits or ThrottlingCWE-937: Common Weakness Enumeration Entry CWE-937CWE-1035: Common Weakness Enumeration Entry CWE-1035

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-40984 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsGerekmiyor
UserGerekmiyor

Official Sources and Advisories

https://spring.io/security/cve-2026-40984vendor-advisoryhttps://access.redhat.com/errata/RHSA-2026:36839nvdhttps://access.redhat.com/errata/RHSA-2026:37390nvdhttps://access.redhat.com/errata/RHSA-2026:41951nvdhttps://access.redhat.com/errata/RHSA-2026:50848nvdhttps://access.redhat.com/errata/RHSA-2026:50849nvdhttps://access.redhat.com/errata/RHSA-2026:54435nvdhttps://access.redhat.com/errata/RHSA-2026:62260nvdhttps://access.redhat.com/errata/RHSA-2026:66488nvdhttps://access.redhat.com/errata/RHSA-2026:66545nvd

CVSS Vector Radar Chart

7.5 / 10
Attack VectorNetworkComplexityLowPrivilegesNoneUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityHigh

Vulnerability Scoring Details

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone required
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)High

Yama doğrulandı

8 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

Follow the vendor

S
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Spring
M
maven logo
maven

Weakness Type (CWE & CAPEC)

CWE-400 CWE-770 CWE-937 CWE-1035

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