CVE-2026-41078 PUBLISHED

OpenTelemetry dotnet: Potential memory exhaustion via unbounded pooled-list sizing in Jaeger exporter conversion path

Assigner: GitHub_M
Reserved: 16.04.2026 Published: 23.04.2026 Updated: 23.04.2026

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.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS Score: 5.9

Product Status

Vendor open-telemetry
Product opentelemetry-dotnet
Versions
  • Version <= 1.6.0-rc.1 is affected
Vendor open-telemetry
Product OpenTelemetry.Exporter.Jaeger
Versions
  • Version <= 1.6.0-rc.1 is affected

References

Problem Types

  • CWE-770: Allocation of Resources Without Limits or Throttling CWE