CVE-2026-41310
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
OpenTelemetry.Exporter.ZipkinNuGet | < 1.15.3 | 1.15.3 |
Affected products
3- Range: <= 1.15.2
- cpe:2.3:a:opentelemetry:opentelemetry.exporter.zipkin:*:*:*:*:*:.net:*:*Range: <1.15.3
Patches
Vulnerability mechanics
References
5- github.com/advisories/GHSA-88hf-wf7h-7w4mghsaADVISORY
- github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-88hf-wf7h-7w4mnvdVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-41310ghsaADVISORY
- github.com/open-telemetry/opentelemetry-dotnet/commit/c724f4bd6fd88e9a599af1668bf7af9487155b62ghsaWEB
- github.com/open-telemetry/opentelemetry-dotnet/pull/7081nvdIssue TrackingWEB
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