CVE-2026-41433 PUBLISHED

OpenTelemetry eBPF Instrumentation: Privileged Java agent injection allows arbitrary host file overwrite via untrusted TMPDIR

Assigner: GitHub_M
Reserved: 20.04.2026 Published: 24.04.2026 Updated: 25.04.2026

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.

Metrics

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H
CVSS Score: 8.4

Product Status

Vendor open-telemetry
Product opentelemetry-ebpf-instrumentation
Versions
  • Version >= 0.4.0, < 0.8.0 is affected

References

Problem Types

  • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE
  • CWE-59: Improper Link Resolution Before File Access ('Link Following') CWE