CVE-2026-45682: OpenTelemetry eBPF Instrumentation: CappedConcurrentHashMap leaks keys after removals

May 18, 2026 (updated June 9, 2026)

The custom CappedConcurrentHashMap introduced for Java TLS state tracking never removes keys from its insertion-order queue when entries are deleted. In long-running instrumented JVMs, repeated connection churn can therefore grow the queue without bound and exhaust heap memory.

References

github.com/advisories/GHSA-962q-hwm5-52x5
github.com/open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.9.0
github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-962q-hwm5-52x5
nvd.nist.gov/vuln/detail/CVE-2026-45682

Code Behaviors & Features

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