What is CVE-2026-41078?

CVE-2026-41078 is a medium-severity vulnerability in Open-telemetry Opentelemetry-dotnet, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.9/10. Published 2026-04-23.

How severe is CVE-2026-41078?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Resource exhaustion in Open-telemetry Opentelemetry-dotnet

CVE-2026-41078

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 e…

EPSS: 0.001 (19.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Open-telemetry Opentelemetry-dotnet — versions <= 1.6.0-rc.1
Open-telemetry Opentelemetry.exporter.jaeger — versions <= 1.6.0-rc.1
Opentelemetry — versions 1.6.0

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-38h3-2333-qx47 (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2026-41078?: CVE-2026-41078 is a medium-severity vulnerability in Open-telemetry Opentelemetry-dotnet, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.9/10. Published 2026-04-23.
How severe is CVE-2026-41078?: Medium severity. CVSS v3 base score is 5.9 out of 10.