medium5.9
CVE-2026-41078
OpenTelemetry .NET has potential memory exhaustion via unbounded pooled-list sizing in Jaeger exporter conversion path
Impact
OpenTelemetry dotnet is a dotnet telemetry framework. In 1.6.0-rc.1 and earlier, OpenTelemetry.Exporter.Jaeger may allow sustained memory pressure when the internal pooled-list sizing grows based on a large observed span/tag set and that enlarged size is reused for subsequent allocations. Under high-cardinality or attacker-influenced telemetry input, this can increase memory consumption and potentially cause denial of service. There is no plan to fix this issue as OpenTelemetry.Exporter.Jaeger was deprecated in 2023.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| nuget | OpenTelemetry.Exporter.Jaeger | <= 1.6.0-rc.1 | none recorded |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Opentelemetry | Opentelemetry | before 1.6.0 Version 1.6.0 |