CVE-2026-40984
No exploitation reported by the sources we read.
- Published2026-06-09
- Fixed in1.16.6 · 1.15.12
- WeaknessCWE-400 · CWE-770
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
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.
Timeline
dates in UTC- 2026-06-0905:16CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-40984?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-40984?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
OSV| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 1.16 | ≥ 1.16.0, < 1.16.6 | 1.16.6 | OSV |
| 1.15 | ≥ 1.15.0, < 1.15.12 | 1.15.12 | OSV |
| 1.9 | ≤ 1.9.17 | no fix published | OSV |
| 1.x | ≥ 1.10.0, ≤ 1.13.15 | no fix published | OSV |
| 1.14 | ≥ 1.14.0, ≤ 1.14.14 | no fix published | OSV |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 1.16 | ≥ 1.16.0, < 1.16.6 | 1.16.6 | OSV |
| 1.15 | ≥ 1.15.0, < 1.15.12 | 1.15.12 | OSV |
| 1.13 | ≤ 1.13.15 | no fix published | OSV |
| 1.14 | ≥ 1.14.0, ≤ 1.14.14 | no fix published | OSV |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 1.16 | ≥ 1.16.0, < 1.16.6 | 1.16.6 | OSV |
| 1.15 | ≥ 1.15.0, < 1.15.12 | 1.15.12 | OSV |
| 1.13 | ≤ 1.13.15 | no fix published | OSV |
| 1.14 | ≥ 1.14.0, ≤ 1.14.14 | no fix published | OSV |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
Red Hat Security Advisory: AMQ Clients 2026.Q3
Red Hat Security Advisory: Red Hat AMQ Broker 7.13.6 release and security update
Red Hat Security Advisory: Red Hat AMQ Broker 7.14.1 release and security update
Red Hat Security Advisory: Red Hat OpenShift Dev Spaces 3.30.0 Release.
Red Hat Security Advisory: Red Hat build of Keycloak 26.6.5 Images Security Update
Red Hat Security Advisory: Red Hat build of Keycloak 26.6.5 Security Update
4 more advisories
Fix
- Update micrometer-core to 1.16.6 · 1.15.12
- Vendor fix Red Hat Product Security RHSA-2026:69459 · 1 productBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
- Vendor fix Red Hat Product Security RHSA-2026:66545 · 1 productBefore applying the update, back up your existing installation, including all applications, configuration files, databases and database settings. The References section of this erratum contains a download link (you must log in to download the update).
- Vendor fix Red Hat Product Security RHSA-2026:62260 · 8 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
- Vendor fix Red Hat Product Security RHSA-2026:50849 · 9 productsBefore applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on.
- Vendor fix Red Hat Product Security RHSA-2026:41951 · 1 productBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
- Vendor fix Red Hat Product Security RHSA-2026:36839 · 1 productBefore applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on. The References section of this erratum contains a download link (you must log in to download the update).
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Published
- 2026-06-09
- Last Modified
- 2026-09-14
- NVD status
- Awaiting Analysis
Frequently asked questions
What is CVE-2026-40984?
Is CVE-2026-40984 actively exploited?
What is the CVSS score for CVE-2026-40984?
Running micrometer-core? Hear about its next vulnerability
Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Go further
- Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.