CVE-2026-45682

OpenTelemetry eBPF Instrumentation: CappedConcurrentHashMap leaks keys after removals

State: Published
Severity: 5.1 Medium
Published: Jun 2, 2026
Updated: Jun 2, 2026
Reserved: May 12, 2026

Description

OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. Prior to version 0.9.0, 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. This issue has been patched in version 0.9.0.

Scores

CVSS	Score	Vector	Source
3.1	5.1 Medium	CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-401 Missing Release of Memory after Effective Lifetime
CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

Product	Versions
opentelemetry-ebpf-instrumentationopen-telemetry	< 0.9.0Affected

References

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