CVE-2026-41433

HIGH

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

Title source: cna

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.

References (2)

[X_Refsource_Confirm] https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-8gmg-3w2q-65f4

[X_Refsource_Misc] https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/releases/tag/v0.8.0

Scores

CVSS v3 8.4

EPSS 0.0002

EPSS Percentile 5.4%

Attack Vector LOCAL

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-22 CWE-59

Status published

Products (1)

open-telemetry/opentelemetry-ebpf-instrumentation >= 0.4.0, < 0.8.0

Published Apr 24, 2026

Tracked Since Apr 24, 2026