OpenTelemetry .NET Zipkin exporter has unbounded remote endpoint cache leading to memory growth
Published May 6, 2026
5.3
MEDIUMCVSS 3.1
EPSS 0.40%
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.
Affected products
-
Affected
- ≤ 1.15.2
Default status is the baseline for the product. Each version can override it (patched versions can be marked unaffected).
| Vendor | Product | Default status | Versions |
|---|---|---|---|
| Open-Telemetry | Opentelemetry-Dotnet | unknown | Affected
|
- < 1.15.3
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (6)
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-28222 Advisory
- https://github.com/advisories/GHSA-88hf-wf7h-7w4m Advisory
- https://github.com/open-telemetry/opentelemetry-dotnet/commit/c724f4bd6fd88e9a599af1668bf7af9487155b62
- https://github.com/open-telemetry/opentelemetry-dotnet/pull/7081 x_refsource_MISCIssue Tracking
- https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-88hf-wf7h-7w4m x_refsource_CONFIRMVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-41310
| Link | Providers | Tags |
|---|---|---|
| https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-28222 | Advisory | |
| https://github.com/advisories/GHSA-88hf-wf7h-7w4m | Advisory | |
| https://github.com/open-telemetry/opentelemetry-dotnet/commit/c724f4bd6fd88e9a599af1668bf7af9487155b62 | ||
| https://github.com/open-telemetry/opentelemetry-dotnet/pull/7081 | x_refsource_MISCIssue Tracking | |
| https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-88hf-wf7h-7w4m | x_refsource_CONFIRMVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2026-41310 |
Change history (0)
No recorded changes yet.
CVE.org / MITRE
CISA Vulnrichment
Red Hat
No data
GitHub