Medium, CVSS 5.3NuGetPublished
OpenTelemetry's Zipkin remote endpoint cache could grow without bounds and increase memory pressure
CVE-2026-41310 · GHSA-88hf-wf7h-7w4m
- Affected
- NuGet opentelemetry.exporter.zipkin <= 1.15.2
- Fixed in
- 1.15.3· Vendor fix available
- Issue
- 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
Recommended action: Upgrade to 1.15.3 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.