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TI-2026-33424 Aliases CVE-2026-45682GHSA-962q-hwm5-52x5

OpenTelemetry eBPF Instrumentation: CappedConcurrentHashMap leaks keys after removals

Priority MEDIUM 58CWE-401Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-401.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00162 5th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed opentelemetry-ebpf-instrumentation (open-telemetry): 0.9.0go.opentelemetry.io/obi (Go): 0.9.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
open-telemetryopentelemetry-ebpf-instrumentationbefore 0.9.00.9.0Patch availableCNA
—go.opentelemetry.io/obi (Go)before 0.9.00.9.0Patch availableGHSA-962q-hwm5-52x5
  • opentelemetry-ebpf-instrumentation Vendoropen-telemetry Affected before 0.9.0 Fixed in 0.9.0 Patch available CNA
  • go.opentelemetry.io/obi (Go) Vendor— Affected before 0.9.0 Fixed in 0.9.0 Patch available GHSA-962q-hwm5-52x5

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:opentelemetry:ebpf_instrumentation:*:*:*:*:*:go:*:*before 0.9.0Vulnerableopen-telemetry
  • cpe:2.3:a:opentelemetry:ebpf_instrumentation:*:*:*:*:*:go:*:* Versions before 0.9.0 Vulnerable ·open-telemetry

Remediation

  • Fix · CNA opentelemetry-ebpf-instrumentation (open-telemetry) Fixed in 0.9.0
  • Fix · GHSA-962q-hwm5-52x5 go.opentelemetry.io/obi (Go) Fixed in 0.9.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-45682
  2. 2026-10-03 Alias added: GHSA-962q-hwm5-52x5

References

Exploit 1

Advisory 1

Other 2

  • TI-2026-33428 OpenTelemetry eBPF Instrumentation: Memcached payload length overflow can crash OBI CVSS 3.1HIGH 7.5
  • TI-2026-33427 OpenTelemetry eBPF Instrumentation: MongoDB parser panics on malformed wire messages CVSS 3.1HIGH 7.5
  • TI-2026-33420 OpenTelemetry eBPF Instrumentation: Postgres BIND parsing can panic on malformed payloads CVSS 3.1HIGH 7.5
  • TI-2026-33421 OpenTelemetry eBPF Instrumentation: Redis error text is exported in span status messages CVSS 3.1MEDIUM 6.5
  • TI-2026-33422 OpenTelemetry eBPF Instrumentation: Unbounded BPF internal metrics replay can exhaust CPU CVSS 3.1HIGH 7.5
  • TI-2026-33423 OpenTelemetry eBPF Instrumentation: CPU-mismatch fallback uses 256-byte buffer with 8KB size CVSS 3.1MEDIUM 5.9
See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences