OpenTelemetry's Zipkin remote endpoint cache could grow without bounds and increase memory pressure

TRUNG BÌNH 5.3CVE-2026-41310 · GHSA-88hf-wf7h-7w4m · Công bố 06/05/2026 · cập nhật 26/10/2026

Tóm tắt nhanh

CVE-2026-41310 là lỗ hổng mức TRUNG BÌNH (CVSS 5.3) ảnh hưởng OpenTelemetry.Exporter.Zipkin, opentelemetry.exporter.zipkin (opentelemetry).
Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.31%, cao hơn 24.0% các lỗ hổng khác.
Cách xử lý: cập nhật lên 1.15.3 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
OpenTelemetry.Exporter.Zipkin NuGet	`< 1.15.3`	`1.15.3`
opentelemetry.exporter.zipkin opentelemetry	`< 1.15.3`	`1.15.3`

Mô tả

Summary

The Zipkin exporter remote endpoint cache accepted unbounded key growth derived from span attributes. In high-cardinality scenarios, this could increase process memory usage over time and degrade availability.

Details

Introduce a bounded, thread-safe LRU cache for remote endpoints.
Enforce fixed maximum size to prevent unbounded growth.

Impact

A process using Zipkin export for client/producer spans could experience avoidable memory growth under sustained unique remote endpoint values.

Resources

#7081

Mô tả của NVD

OpenTelemetry.Exporter.Zipkin is the .NET Zipkin exporter for OpenTelemetry. In versions 1.15.2 and earlier, the Zipkin exporter remote endpoint cache accepts unbounded key growth derived from span attributes. In high-cardinality scenarios, a process using Zipkin export for client or producer spans could experience avoidable memory growth under sustained unique remote endpoint values, increasing process memory usage over time and degrading availability. This issue is fixed in version 1.15.3, which introduces a bounded, thread-safe LRU cache for remote endpoints with a fixed maximum size.