Vulnerability · Published Jun 2, 2026 · Assigned by GitHub_M
CVE-2026-45680OpenTelemetry eBPF Instrumentation: Unbounded BPF internal metrics replay can exhaust CPU
Medium 5.9
In plain English
A medium-severity uncontrolled resource consumption in opentelemetry-ebpf-instrumentation from open-telemetry. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. Prior to version 0.9.0, OBI replays BPF probe hits into histogram observations by looping once per recorded run count. On busy systems, the run-count delta can become very large, causing the metrics exporter to spend excessive CPU time in a tight loop every collection interval. This issue has been patched in version 0.9.0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | go.opentelemetry.io/obi | 0.9.0 | GHSA-89c6-vpcj-7vj4 |
| Go | go.opentelemetry.io/obi | 0.9.0 | GO-2026-5248 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| open-telemetry | opentelemetry-ebpf-instrumentation | < 0.9.0 |
Weakness: CWE-400, CWE-834 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H