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  5. CVE-2026-41173

CVE-2026-41173: OpenTelemetry.Sampler.AWS & OpenTelemetry.Resources.AWS have unbounded HTTP response body reads

April 23, 2026

OpenTelemetry.Sampler.AWS reads unbounded HTTP response bodies from a configured AWS X-Ray remote sampling endpoint into memory.

OpenTelemetry.Resources.AWS reads unbounded HTTP response bodies from a configured AWS EC2/ECS/EKS remote instance metadata service endpoint into memory.

Both of these would allow an attacker-controlled endpoint or be acting as a Man-in-the-Middle (MitM) to cause excessive memory allocation and possible process termination (via Out of Memory (OOM)).

References

  • github.com/advisories/GHSA-28xm-prxc-5866
  • github.com/open-telemetry/opentelemetry-dotnet-contrib
  • github.com/open-telemetry/opentelemetry-dotnet-contrib/pull/4100
  • github.com/open-telemetry/opentelemetry-dotnet-contrib/pull/4122
  • github.com/open-telemetry/opentelemetry-dotnet-contrib/security/advisories/GHSA-28xm-prxc-5866
  • nvd.nist.gov/vuln/detail/CVE-2026-41173

Code Behaviors & Features

Detect and mitigate CVE-2026-41173 with GitLab Dependency Scanning

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Affected versions

All versions before 1.15.1

Fixed versions

  • 1.15.1

Solution

Upgrade to version 1.15.1 or above.

Impact 5.9 MEDIUM

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

Learn more about CVSS

Weakness

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

Source file

nuget/OpenTelemetry.Resources.AWS/CVE-2026-41173.yml

Spotted a mistake? Edit the file on GitLab.

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