Executive brief
OpenTelemetry eBPF Instrumentation is a tool used to monitor and collect data from software applications. A vulnerability in its MongoDB traffic monitor allows a remote attacker to crash the monitoring agent by sending specially crafted network messages. This results in a loss of visibility into the monitored systems, potentially hiding other malicious activity or disrupting operational monitoring.
Technical details
The MongoDB TCP parser in OpenTelemetry eBPF Instrumentation (go.opentelemetry.io/obi) contains multiple flaws leading to runtime panics. In versions 0.1.0 through 0.3.0, the 'parseOpMessage' and 'parseSections' functions fail to perform bounds checks on raw network buffers before reading, leading to slice-bounds panics. In versions 0.1.0 through 0.8.0, 'parseFirstField' performs an unchecked type assertion on BSON field values, causing an interface conversion panic if the input is not a string. An unauthenticated remote attacker can exploit these by sending malformed MongoDB OP_MSG packets or BSON documents, crashing the telemetry agent. The issue is fixed in version 0.9.0.
Affected products
- OpenTelemetry OpenTelemetry eBPF Instrumentation (go.opentelemetry.io/obi) >= 0.1.0, < 0.9.0
Timeline
- 2026-05-11: patched: Version 0.9.0 released
- 2026-05-12: advisory: GitHub Security Advisory published
- 2026-06-02: disclosed: CVE published to NVD