Vulnerability Details CVE-2026-45686
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 16.0%
CVSS Severity
CVSS v3 Score 7.5
References
- https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.9.0
- https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-43g7-cwr8-q3jh
- https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-43g7-cwr8-q3jh
Products affected by CVE-2026-45686
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cpe:2.3:a:opentelemetry:ebpf_instrumentation:0.7.0
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cpe:2.3:a:opentelemetry:ebpf_instrumentation:0.7.1
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cpe:2.3:a:opentelemetry:ebpf_instrumentation:0.8.0