Loading vulnerability…
CVE-2026-40983 is a high-severity denial-of-service vulnerability in Micrometer’s gRPC server instrumentation. Specially crafted gRPC requests can trigger uncontrolled resource consumption and cause a DoS condition in applications using affected Micrometer releases. The issue affects Micrometer 1.16.0 through 1.16.5 and 1.15.0 through 1.15.11. Exploitability depends on the application using vulnerable io.micrometer:micrometer-core versions together with an ObservationRegistry that records observations, a metric-producing observation handler such as DefaultMeterObservationHandler or an equivalent custom ObservationHandler, and ObservationGrpcServerInterceptor to instrument the gRPC server. Versions earlier than 1.15.0 are not affected.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Micrometer high-severity gRPC server denial-of-service vulnerability mentioned in a list of recent Spring ecosystem advisories.
A denial-of-service vulnerability in Micrometer gRPC server instrumentation affecting Micrometer / Micrometer-core / jetty11 / jetty12 multiple versions.
A denial-of-service vulnerability in Micrometer gRPC server instrumentation that can be triggered by specially crafted gRPC requests when ObservationRegistry and ObservationGrpcServerInterceptor are configured in affected versions.
A related denial-of-service vulnerability in Micrometer's gRPC server instrumentation, disclosed alongside CVE-2026-40984.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.