CVE-2026-40984: Spring Micrometer · Uncontrolled Resource Consumption
Affects Spring MicrometerSource CVE Database V5
Not known to be exploited · CVSS 7.5 High · fixed in 1.16.5.1 : patch Spring Micrometer soon.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.7% chance of exploitation in 30 days – higher than 56% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 1.16.5.1, 1.15.11.1, 1.14.16 +5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 9 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| SpringMicrometer | Affected
| Fixed in
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| SpringMicrometer | Affected
| Fixed in
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| SpringMicrometer | Affected
| Fixed in
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| SpringMicrometer | Affected
| Fixed in
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| SpringMicrometer | Affected
| Fixed in
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| SpringMicrometer | Affected
| Fixed in
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Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Red Hat's advisory does not indicate that a fix is currently available or that the issue is mitigated. Users should monitor Red Hat's security updates and apply patches once released. In the meantime, consider disabling or limiting HTTP server instrumentation metrics if feasible to reduce exposure.
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.
References
- spring.io/security/cve-2026-40984 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-40984 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2486716 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40984.json (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:36839 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:41951 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:37390 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:50849 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:50848 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:54435 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:62260 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:66545 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:66488 (opens in a new tab)