# CVE-2026-45682: OpenTelemetry eBPF Instrumentation memory leak in Java TLS tracking

Source: https://junglewise.ai/threats/cve-2026-45682-opentelemetry-ebpf-instrumentation-memory-leak-in-java-tls  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-02. Updated: 2026-06-02  
License: CC BY 4.0 with a link back

CVE-2026-45682 · Severity: medium · CVSS 5.1 · Published 2026-06-02

OpenTelemetry eBPF Instrumentation is a tool used to monitor application performance and security. A flaw in how it tracks Java encrypted (TLS) connections causes it to leak memory every time a connection is opened and closed. Over time, this can lead to system instability, significant performance slowdowns, or complete application crashes due to memory exhaustion.

Technologies: [go.opentelemetry.io/obi (Go)](https://junglewise.ai/threats/technologies/go-opentelemetry-io-obi), [Opentelemetry Ebpf Instrumentation](https://junglewise.ai/threats/technologies/ebpf-instrumentation). Vendors: [Go](https://junglewise.ai/threats/vendors/go), [Opentelemetry](https://junglewise.ai/threats/vendors/opentelemetry).

## Quick answers

**Is CVE-2026-45682 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-45682 being exploited in the wild.

**How severe is CVE-2026-45682?** Medium severity, with a CVSS score of 5.1, published 2 June 2026.

**Which products and versions are affected?** go.opentelemetry.io/obi (Go) < 0.9.0, SEMVER:introduced=0,fixed=0.9.0; Opentelemetry Ebpf Instrumentation < 0.9.0, Prior to 0.9.0.

**Is there a fix for CVE-2026-45682?** Yes. go.opentelemetry.io/obi (Go): upgrade to 0.9.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-45682 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-45682?** Check whether you run go.opentelemetry.io/obi (Go) or Opentelemetry Ebpf Instrumentation at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- go.opentelemetry.io/obi (Go): upgrade to 0.9.0 or later

  ```sh
  go get go.opentelemetry.io/obi@v0.9.0
  ```


## Technical details

A memory leak exists in the custom CappedConcurrentHashMap implementation used for Java TLS state tracking in OpenTelemetry eBPF Instrumentation (OBI). While the map correctly limits its size during 'put' operations, the 'remove' method fails to remove keys from the internal ConcurrentLinkedQueue used for tracking insertion order. In environments with high connection churn, this queue grows indefinitely even if the active map size remains small. An attacker or high-traffic workload can trigger repeated TLS handshakes to exhaust the JVM heap, leading to OutOfMemoryError (OOM) and denial of service. This issue is addressed in version 0.9.0 by replacing the leaky map with a ring-buffer-backed implementation.

## Affected products

- OpenTelemetry OpenTelemetry eBPF Instrumentation (OBI) Prior to 0.9.0

## Identifiers

- CVE-2026-45682
- GHSA-962q-hwm5-52x5
- GO-2026-5275

## Timeline

- 2026-05-11: patched: Version 0.9.0 released
- 2026-05-12: advisory: GitHub Security Advisory published
- 2026-06-02: disclosed: CVE published to NVD

## References

- [https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.9.0](https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.9.0)
- [https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-962q-hwm5-52x5](https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-962q-hwm5-52x5)

## Related threats

- [OpenTelemetry eBPF Instrumentation integer overflow in Memcached parser](https://junglewise.ai/threats/cve-2026-45686-opentelemetry-ebpf-instrumentation-integer-overflow-in-memcached)
- [OpenTelemetry eBPF Instrumentation denial of service in MongoDB parser](https://junglewise.ai/threats/cve-2026-45685-opentelemetry-ebpf-instrumentation-denial-of-service-in-mongodb)
- [OpenTelemetry eBPF Instrumentation buffer over-read in log enricher](https://junglewise.ai/threats/cve-2026-45684-opentelemetry-ebpf-instrumentation-buffer-over-read-in-log)
- [OpenTelemetry OBI kernel memory disclosure in Java TLS ioctl probe](https://junglewise.ai/threats/cve-2026-45683-opentelemetry-obi-kernel-memory-disclosure-in-java-tls-ioctl)
- [OpenTelemetry eBPF Instrumentation out-of-bounds read in message-buffer fallback](https://junglewise.ai/threats/cve-2026-45681-opentelemetry-ebpf-instrumentation-out-of-bounds-read-in-message)