CVE-2026-41078
MEDIUMOpenTelemetry dotnet: Potential memory exhaustion via unbounded pooled-list sizing in Jaeger exporter conversion path
Title source: cnaDescription
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.
References (1)
Core 1
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-38h3-2333-qx47
Scores
CVSS v3
5.9
EPSS
0.0022
EPSS Percentile
12.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-770
Status
published
Products (5)
nuget/OpenTelemetry.Exporter.Jaeger
0NuGet
open-telemetry/opentelemetry-dotnet
<= 1.6.0-rc.1
open-telemetry/OpenTelemetry.Exporter.Jaeger
<= 1.6.0-rc.1
opentelemetry/opentelemetry
1.6.0 alpha1 (5 CPE variants)
opentelemetry/opentelemetry
< 1.6.0
Published
Apr 23, 2026
Tracked Since
Apr 24, 2026