Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Opentelemetry | Ebpf Instrumentation | >= 0.7.0, < 0.9.0 |
Related Weaknesses (CWE)
References
- https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/releases/taProductRelease Notes
- https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/adExploitVendor Advisory
- https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/adExploitVendor Advisory
FAQ
What is CVE-2026-45686?
CVE-2026-45686 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 memcach...
How severe is CVE-2026-45686?
CVE-2026-45686 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-45686?
Check the references section above for vendor advisories and patch information. Affected products include: Opentelemetry Ebpf Instrumentation.