high7.5
CVE-2026-40984
In Micrometer, it is possible for a user to provide specially crafted HTTP requests that may cause a denial-of-service (DoS) condition.
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | io.micrometer:micrometer-core | >= 1.16.0, <= 1.16.5 | 1.16.6 |
| maven | io.micrometer:micrometer-jetty12 | >= 1.16.0, <= 1.16.5 | 1.16.6 |
| maven | io.micrometer:micrometer-jetty11 | >= 1.16.0, <= 1.16.5 | 1.16.6 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-g3pr-3p32-fp23
- https://nvd.nist.gov/vuln/detail/CVE-2026-40984
- https://spring.io/security/cve-2026-40984
- https://github.com/micrometer-metrics/micrometer/commit/36da131525228188a36779a28471a76c79213dd4
- https://access.redhat.com/errata/RHSA-2026:36839
- https://access.redhat.com/errata/RHSA-2026:37390
- https://access.redhat.com/errata/RHSA-2026:41951
- https://access.redhat.com/errata/RHSA-2026:50848
- https://access.redhat.com/errata/RHSA-2026:50849
- https://access.redhat.com/security/cve/CVE-2026-40984
- https://bugzilla.redhat.com/show_bug.cgi?id=2486716
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40984.json
- https://access.redhat.com/errata/RHSA-2026:54435
- https://access.redhat.com/errata/RHSA-2026:62260
- https://access.redhat.com/errata/RHSA-2026:66488
- https://access.redhat.com/errata/RHSA-2026:66545