CVE-2026-41310

OpenTelemetry.Exporter.Zipkin is the .NET Zipkin exporter for OpenTelemetry. In versions 1.15.2 and earlier, the Zipkin exporter remote endpoint cache accepts unbounded key growth derived from span attributes. In high-cardinality scenarios, a process using Zipkin export for client or producer spans could experience avoidable memory growth under sustained unique remote endpoint values, increasing process memory usage over time and degrading availability. This issue is fixed in version 1.15.3, which introduces a bounded, thread-safe LRU cache for remote endpoints with a fixed maximum size.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/open-telemetry/opentelemetry-dotnet/pull/7081	Issue Tracking
https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-88hf-wf7h-7w4m	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:opentelemetry:opentelemetry.exporter.zipkin:*:*:*:*:*:.net:*:*

History

26 Oct 2026, 19:10

Type	Values Removed	Values Added
Summary		(es) OpenTelemetry.Exporter.Zipkin es el exportador Zipkin de .NET para OpenTelemetry. En las versiones 1.15.2 y anteriores, la caché de puntos finales remotos del exportador Zipkin acepta un crecimiento ilimitado de claves derivado de los atributos de span. En escenarios de alta cardinalidad, un proceso que utiliza la exportación de Zipkin para spans de cliente o productor podría experimentar un crecimiento evitable de la memoria bajo valores de puntos finales remotos únicos y sostenidos, aumentando el uso de memoria del proceso con el tiempo y degradando la disponibilidad. Este problema se corrige en la versión 1.15.3, que introduce una caché LRU acotada y segura para hilos para puntos finales remotos con un tamaño máximo fijo.

Information

Published : 2026-05-06 22:16

Updated : 2026-10-26 19:10

NVD link : CVE-2026-41310

Mitre link : CVE-2026-41310

CVE.ORG link : CVE-2026-41310

JSON object : View

Products Affected

opentelemetry

opentelemetry.exporter.zipkin

CWE

CWE-400

Uncontrolled Resource Consumption

CWE-770

Allocation of Resources Without Limits or Throttling

{"id": "CVE-2026-41310", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-41310", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-07T13:18:40.344332Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "open-telemetry", "product": "opentelemetry-dotnet", "versions": [{"status": "affected", "version": "<= 1.15.2"}]}]}], "published": "2026-05-06T22:16:25.643", "references": [{"url": "https://github.com/open-telemetry/opentelemetry-dotnet/pull/7081", "tags": ["Issue Tracking"], "source": "security-advisories@github.com"}, {"url": "https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-88hf-wf7h-7w4m", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-400"}, {"lang": "en", "value": "CWE-770"}]}], "descriptions": [{"lang": "en", "value": "OpenTelemetry.Exporter.Zipkin is the .NET Zipkin exporter for OpenTelemetry. In versions 1.15.2 and earlier, the Zipkin exporter remote endpoint cache accepts unbounded key growth derived from span attributes. In high-cardinality scenarios, a process using Zipkin export for client or producer spans could experience avoidable memory growth under sustained unique remote endpoint values, increasing process memory usage over time and degrading availability. This issue is fixed in version 1.15.3, which introduces a bounded, thread-safe LRU cache for remote endpoints with a fixed maximum size."}, {"lang": "es", "value": "OpenTelemetry.Exporter.Zipkin es el exportador Zipkin de .NET para OpenTelemetry. En las versiones 1.15.2 y anteriores, la cach\u00e9 de puntos finales remotos del exportador Zipkin acepta un crecimiento ilimitado de claves derivado de los atributos de span. En escenarios de alta cardinalidad, un proceso que utiliza la exportaci\u00f3n de Zipkin para spans de cliente o productor podr\u00eda experimentar un crecimiento evitable de la memoria bajo valores de puntos finales remotos \u00fanicos y sostenidos, aumentando el uso de memoria del proceso con el tiempo y degradando la disponibilidad. Este problema se corrige en la versi\u00f3n 1.15.3, que introduce una cach\u00e9 LRU acotada y segura para hilos para puntos finales remotos con un tama\u00f1o m\u00e1ximo fijo."}], "lastModified": "2026-10-26T19:10:00.163", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:opentelemetry:opentelemetry.exporter.zipkin:*:*:*:*:*:.net:*:*", "vulnerable": true, "matchCriteriaId": "88FCC724-04D2-4E6A-9E07-8375E9E862DB", "versionEndExcluding": "1.15.3"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}