CVE-2026-41433 HIGH

CVE-2026-41433: OpenTelemetry eBPF Instrumentation: Privileged Java agent injection allows arbitrary host file overwrite via untrusted TMPDIR

Vendor Open-Telemetry
Product opentelemetry-ebpf-instrumentation
Weakness CWE-22 · Path traversal
Published April 24, 2026
Last update April 25, 2026
View on NVD All CVEs

CVSS base score

8.4/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity High

CVSS vector

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

What the vulnerability does

Description

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.

Key dates

Disclosure timeline

April 24, 2026 CVE published
April 25, 2026 Record updated