Vulnerability · Published Jun 2, 2026 · Assigned by GitHub_M
CVE-2026-45676OpenTelemetry eBPF Instrumentation: Unsafe fastelf parsing allows malformed ELF to crash agent
Medium 5.5
In plain English
A medium-severity improper input validation 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 0.2% (higher than 5% 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's replacement ELF parser trusts section offsets, counts, and string offsets from the executable file. A crafted local ELF can make OBI dereference invalid section pointers or slice past string tables, causing the agent to panic while determining the process language. 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-wp73-mwgf-4jq9 |
| Go | go.opentelemetry.io/obi | 0.9.0 | GO-2026-5714 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| open-telemetry | opentelemetry-ebpf-instrumentation | < 0.9.0 |
Weakness: CWE-20, CWE-248 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H