CVE-2026-41078— OpenTelemetry dotnet: Potential memory exhaustion via unbounded pooled-list sizing in Jaeger exporter conversion path
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I. Basic Information for CVE-2026-41078
Vulnerability Information
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Vulnerability Title
OpenTelemetry dotnet: Potential memory exhaustion via unbounded pooled-list sizing in Jaeger exporter conversion path
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
不加限制或调节的资源分配
Source: NVD (National Vulnerability Database)
Vulnerability Title
OpenTelemetry .NET 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenTelemetry .NET是OpenTelemetry公司的OpenTelemetry的.NET客户端。 OpenTelemetry .NET 1.6.0-rc.1及之前版本存在安全漏洞，该漏洞源于内部池化列表大小基于大量span/tag集增长，可能导致持续内存压力。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| open-telemetry | opentelemetry-dotnet | <= 1.6.0-rc.1 | - | |
| open-telemetry | OpenTelemetry.Exporter.Jaeger | <= 1.6.0-rc.1 | - |
II. Public POCs for CVE-2026-41078
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · open-telemetry · 2026-04-23 · 5 CVEs total
| CVE-2026-41173 | 5.9 MEDIUM | Unbounded HTTP response body read in OpenTelemetry.Sampler.AWS |
| CVE-2026-40182 | 5.3 MEDIUM | OpenTelemetry dotnet: OTLP exporter reads unbounded HTTP response bodies |
| CVE-2026-40891 | 5.3 MEDIUM | OpenTelemetry dotnet: Unbounded `grpc-status-details-bin` parsing in OTLP/gRPC retry handl |
| CVE-2026-40894 | 5.3 MEDIUM | OpenTelemetry dotnet: Excessive memory allocation when parsing OpenTelemetry propagation h |
IV. Related Vulnerabilities
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Same weakness: CWE-770
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V. Comments for CVE-2026-41078
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