Information disclosure in Open-Telemetry Opentelemetry-Ebpf-Instrumentation
CVE-2026-45683
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.
EPSS: 0.002 (7.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.8 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N.
Affected products
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Product, x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-45683?
- CVE-2026-45683 is a low-severity vulnerability in Open-Telemetry Opentelemetry-Ebpf-Instrumentation, classified under Buffer Under-read. CVSS score: 3.8/10. Published 2026-06-02.
- How severe is CVE-2026-45683?
- Low severity. CVSS v3 base score is 3.8 out of 10.