CVE-2026-45681

Aliases:GHSA-r6c9-g6q5-qrf9GO-2026-5610
Advisory lineage Upstream: 0 Downstream: 2
Analyzed
Published: 02 Jun 2026, 15:25
Last modified:02 Jun 2026, 18:05

Vulnerability Summary

Overall Risk (default)
medium
34/100
CVSS Score
5.9 MEDIUM
v3.1 (cve.org)
EPSS Score
0.29% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

02 Jun 2026, 15:25
Published
Vulnerability first disclosed
02 Jun 2026, 18:05
Last Modified
Vulnerability information updated

Description

OpenTelemetry eBPF Instrumentation provides eBPF instrumentation based on the OpenTelemetry standard. Prior to version 0.9.0, the per-CPU message-buffer fallback path uses a 256-byte backup buffer but preserves the original payload size, which can be up to 8KB. If a CPU mismatch occurs, OBI can read beyond the fallback buffer and leak adjacent memory into telemetry. This issue has been patched in version 0.9.0.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Trends

Current EPSS score: 0.29%• Percentile: 21%

Techniques & Countermeasures

  • CWE-125•Out-of-bounds Read

    The product reads data past the end, or before the beginning, of the intended buffer.

  • CWE-130•Improper Handling of Length Parameter Inconsistency

    The product parses a formatted message or structure, but it does not handle or incorrectly handles a length field that is inconsistent with the actual length of the associated data.

Affected Systems

  • go.opentelemetry.io•obi

    < 0.9.0

  • open-telemetry•opentelemetry-ebpf-instrumentation

    < 0.9.0

  • opentelemetry•ebpf_instrumentation

    < 0.9.0

References (4)