Vulnerability · Published Jun 2, 2026 · Assigned by GitHub_M

CVE-2026-45683OpenTelemetry eBPF Instrumentation: Java TLS ioctl kprobe allows kernel memory disclosure

Low 3.8

In plain English

A low-severity information exposure 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 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.8Low

Exploit odds (30 days)0.2%top 93.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. Prior to version 0.9.0, the Java TLS ioctl probe reads user-controlled ioctl pointers with bpf_probe_read instead of bpf_probe_read_user. An instrumented local process can therefore point OBI at kernel memory and cause that memory to be copied into telemetry. 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-fjq3-ffvr-vm46
Go	go.opentelemetry.io/obi	0.9.0	GO-2026-5366

Affected products (as reported)

Vendor	Product	Versions
open-telemetry	opentelemetry-ebpf-instrumentation	< 0.9.0

Weakness: CWE-127, CWE-200 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

References

https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-fjq3-ffvr-vm46 x_refsource_CONFIRM
https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.9.0 x_refsource_MISC