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CVE-2026-45686

Opentelemetry Ebpf Instrumentation integer overflow

7.5 HIGHPublic exploitEPSS 0.52%
  1. Published2 Jun 2026

Description

OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. From version 0.7.0 to before version 0.9.0, a remotely reachable integer overflow in OBI's memcached text protocol parser can crash the OBI process and cause denial of service. When parsing memcached storage commands such as set, add, replace, append, prepend, or cas, OBI accepts extremely large <bytes> values and adds the payload delimiter length without checking for overflow. A crafted request with <bytes> set to math.MaxInt or math.MaxInt-1 causes the computed payload length to wrap negative and triggers a runtime panic in LargeBufferReader.Peek. This issue has been patched in version 0.9.0.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Opentelemetry Ebpf Instrumentation≥ 0.7.0 < 0.9.0

Remediation

Fixed in
Opentelemetry Ebpf Instrumentation≥ 0.9.0

References

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Frequently asked

Is CVE-2026-45686 being actively exploited?

CVE-2026-45686 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.52%.

How severe is CVE-2026-45686?

CVE-2026-45686 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 0.52% probability of exploitation.

Which products are affected by CVE-2026-45686?

Affected products include Opentelemetry Ebpf Instrumentation.

How do I fix CVE-2026-45686?

Upgrade affected software to a fixed version, for example Opentelemetry Ebpf Instrumentation 0.9.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.