OpenTelemetry eBPF Instrumentation: CPU-mismatch fallback uses 256-byte buffer with 8KB size

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

• CISA KEV Not listed.
• EPSS 0.0029, the 21st percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

1. 31 Oct 2026, 15:06 UTC First seen by agentprime
2. 31 Oct 2026, 15:06 UTC Confirmed by OSV

Sources

• GitHub Advisory Database: GHSA-r6c9-g6q5-qrf9
• OSV: GHSA-r6c9-g6q5-qrf9
• github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-r6c9-g6q5-qrf9
• nvd.nist.gov/vuln/detail/CVE-2026-45681
• github.com/open-telemetry/opentelemetry-ebpf-instrumentation
• github.com/open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.9.0

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.