CVE-2026-41433: OpenTelemetry eBPF Instrumentation: Privileged Java agent injection allows arbitrary host file overwrite via untrusted TMPDIR
OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. From 0.4.0 to before 0.8.0, a flaw in the Java agent injection path allows a local attacker controlling a Java workload to overwrite arbitrary host files when Java injection is enabled and OBI is running with elevated privileges. The injector trusted TMPDIR from the target process and used unsafe file creation semantics, enabling both filesystem boundary escape and symlink-based file clobbering. This vulnerability is fixed in 0.8.0.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-41433?
CVE-2026-41433 is considered a high severity vulnerability due to the potential for arbitrary host file overwrites.
How do I fix CVE-2026-41433?
To address CVE-2026-41433, upgrade OpenTelemetry eBPF Instrumentation to version 0.8.0 or later.
What versions of OpenTelemetry eBPF Instrumentation are affected by CVE-2026-41433?
CVE-2026-41433 affects OpenTelemetry eBPF Instrumentation versions from 0.4.0 up to, but not including, 0.8.0.
What issues can arise from CVE-2026-41433?
CVE-2026-41433 can lead to unauthorized file access and manipulation on the host system.
Is the OpenTelemetry eBPF Instrumentation vulnerable to remote attacks due to CVE-2026-41433?
CVE-2026-41433 poses a risk for local attacks since it involves the injection of a privileged Java agent.