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CVE-2026-40984

High

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.

SeverityHigh
CVSS7.5
Exploit probability—
ProductIo.micrometer:micrometer-core
PublishedJun 9, 2026
First seenJun 9, 2026
Weakness typeCWE-400Uncontrolled resource consumption

How to fix

Update
  • io.micrometer:micrometer-core1.16.6, 1.15.12 or later
  • io.micrometer:micrometer-jetty121.16.6, 1.15.12 or later
  • io.micrometer:micrometer-jetty111.16.6, 1.15.12 or later
Vendor advisories

Affected products

ProductAffected versionsFixed in
io.micrometer:micrometer-coreMaven1.16.0 ≤ v < 1.16.6, 1.15.0 ≤ v < 1.15.12, 1.14.0 ≤ v ≤ 1.14.14, 1.10.0 ≤ v ≤ 1.13.15, v ≤ 1.9.171.16.6, 1.15.12
io.micrometer:micrometer-jetty12Maven1.16.0 ≤ v < 1.16.6, 1.15.0 ≤ v < 1.15.12, 1.14.0 ≤ v ≤ 1.14.14, v ≤ 1.13.151.16.6, 1.15.12
io.micrometer:micrometer-jetty11Maven1.16.0 ≤ v < 1.16.6, 1.15.0 ≤ v < 1.15.12, 1.14.0 ≤ v ≤ 1.14.14, v ≤ 1.13.151.16.6, 1.15.12

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