CVE-2026-40983: Spring Micrometer · Uncontrolled Resource Consumption
Affects Spring MicrometerSource CVE Database V5
Not known to be exploited · CVSS 7.5 High : upgrade to 1.16.5.1 or 1.15.11.1 soon.
Data as of 29 Oct 2026, 19:04 UTC
- EPSS
- 0.6% chance of exploitation in 30 days – higher than 50% 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
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 29 Oct 2026.
What to do
Upgrade Spring Micrometer to 1.16.5.1 or 1.15.11.1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| SpringMicrometer | Affected
| Fixed in
|
| SpringMicrometer | Affected
| Fixed in
|
Mavenio.micrometer/micrometer-corepkg:maven/io.micrometer/micrometer-coreOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
To mitigate the risk, restrict network access to Micrometer's gRPC endpoints to trusted clients only. Implement firewall rules to limit inbound connections to the specific ports used by gRPC. If gRPC functionality is not essential, consider disabling it entirely to eliminate the attack vector. Note that changes to network configurations or service settings may require service restarts, potentially impacting availability during transition.
Description
In Micrometer, it is possible for a user to provide specially crafted gRPC requests that may cause a denial-of-service (DoS) condition. Affected versions: Micrometer 1.16.0 through 1.16.5; 1.15.0 through 1.15.11.
References
- spring.io/security/cve-2026-40983 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-40983 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2486697 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40983.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-2026:50849 (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-2026:66488 (opens in a new tab)