CVE-2026-41078

MEDIUM

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

Title source: cna
STIX 2.1

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.

Scores

CVSS v3 5.9
EPSS 0.0006
EPSS Percentile 17.1%
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 (4)
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