CVE-2026-45685: OpenTelemetry eBPF Instrumentation: MongoDB parser panics on malformed wire messages

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-06-02 · updated 2026-07-22
Weakness: CWE-20

Description

OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. From version 0.1.0 to before version 0.9.0, malformed MongoDB wire messages can trigger uncaught panics in the MongoDB TCP parser, allowing a remote unauthenticated attacker to crash the telemetry agent and cause a denial of service. The parser operates on raw attacker-controlled network payloads before the input is fully validated, so a single crafted message can terminate telemetry collection for the affected process or node. This issue has been patched in version 0.9.0.

Affected products

open-telemetry opentelemetry-ebpf-instrumentation: from 0.1.0 before 0.9.0 — fixed in 0.9.0

How to fix

Upgrade to a fixed version: open-telemetry opentelemetry-ebpf-instrumentation 0.9.0. Check the vendor advisory for mitigations.

References

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