Micrometer StatsD and Logging meter registries line-protocol and log injection vulnerability

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-59296
StatePUBLISHED
Assignervmware
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-21 11:17:05 UTC
Updated2026-08-21 17:16:32 UTC
DescriptionUsing untrusted, non-normalized input as-is for metrics data (such as metric names, tag keys, or tag values) is a dangerous antipattern that general-purpose instrumentation should never perform. When such unsafe instrumentation is used, the application becomes vulnerable to injection and spoofing attacks because micrometer-registry-statsd and micrometer-core do not sanitize newline characters (\n, \r) by default prior to this fix. * For the StatsD registry in micrometer-registry-statsd (when using the Datadog or Etsy flavor), because the StatsD protocol is newline-delimited, this allows for line-protocol injection (cross-metric spoofing). * For LoggingMeterRegistry in micrometer-core, because metric output is printed line-by-line to log files, this allows for both metric spoofing (if downstream log-metrics scrapers or parsers ingest the log lines as separate metrics) and general log spoofing. Specifically, an application is vulnerable when all the following are true: * The application uses a vulnerable version of io.micrometer:micrometer-registry-statsd or io.micrometer:micrometer-core. * The application uses the Datadog or Etsy flavor of the StatsD registry, or uses LoggingMeterRegistry. * The application instruments meters using user-controlled, unvalidated input for metric names, tag keys, or tag values. When vulnerable, an attacker can break out of the current metric or log line by injecting line terminators. This allows them to spoof arbitrary metrics (e.g., system load, standard JVM metrics, or other business metrics) across the metrics registry namespace (either directly via StatsD protocol or via downstream log-metric scrapers/parsers), as well as inject arbitrary log entries to spoof general log records.

Risk And Classification

Primary CVSS: v3.1 5.9 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS: 0.001970000 probability, percentile 0.094000000 (date 2026-08-24)

Problem Types: CWE-74 | CWE-74 CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
3.1CNACVSS5.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA VMware Spring Micrometer affected 1.17.0 - 1.17.0 Not specified
CNA VMware Spring Micrometer affected 1.16.0 - 1.16.6 Not specified
CNA VMware Spring Micrometer affected 1.15.0 - 1.15.12 Not specified
CNA VMware Spring Micrometer affected 1.14.0 - 1.14.16 Not specified
CNA VMware Spring Micrometer affected 1.9.18 and earlier Not specified
CNA VMware Spring Micrometer unaffected 1.17.0.1 enterprise support only Not specified
CNA VMware Spring Micrometer unaffected 1.17.1 oss Not specified
CNA VMware Spring Micrometer unaffected 1.16.6.1 enterprise support only Not specified
CNA VMware Spring Micrometer unaffected 1.16.7 oss Not specified
CNA VMware Spring Micrometer unaffected 1.15.13 enterprise support only Not specified
CNA VMware Spring Micrometer unaffected 1.14.17 enterprise support only Not specified
CNA VMware Spring Micrometer unaffected 1.9.19 enterprise support only Not specified

References

ReferenceSourceLinkTags
spring.io/security/cve-2026-59296 [email protected] spring.io
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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