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CVE-2026-40984highCWE-400CWE-770

Micrometer HTTP server instrumentations DoS vulnerability

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.5epss 0.8%
exploitation probability
0.8%top 47% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Spring · Micrometer
References
https://access.redhat.com/errata/RHSA-2026:36839https://access.redhat.com/errata/RHSA-2026:37390https://access.redhat.com/errata/RHSA-2026:41951https://access.redhat.com/errata/RHSA-2026:50848https://access.redhat.com/errata/RHSA-2026:50849https://access.redhat.com/errata/RHSA-2026:54435https://access.redhat.com/security/cve/CVE-2026-40984https://bugzilla.redhat.com/show_bug.cgi?id=2486716https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40984.jsonhttps://spring.io/security/cve-2026-40984