CVE-2026-41310 json
OpenTelemetry .NET Zipkin exporter has unbounded remote endpoint cache leading to memory growth
published 2026-04-28 6 mo ago modified 2026-10-26 13 d ago also GHSA-88hf-wf7h-7w4m , EUVD-2026-28222
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 24%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- nuget OpenTelemetry.Exporter.Zipkin 1.15.3
- opentelemetry opentelemetry.exporter.zipkin 1.15.3
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 6 mo ago
Exploit prediction
0.31% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| GitHub | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| nuget | OpenTelemetry.Exporter.Zipkin | <1.15.3 |
1.15.3 |
Affected products
- open-telemetry opentelemetry-dotnet
Classification
References
-
github.com
/open-telemetry/opentelemetry-dotnet/pull/7081
web, issue-tracking
-
github.com
/open-telemetry/opentelemetry-dotnet/commit/c724f4bd6fd88e9a599af1668bf7af9487155b62
web
-
github.com
/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-88hf-wf7h-7w4m
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-41310
advisory
-
github.com
/open-telemetry/opentelemetry-dotnet
package
Sources
- CVE List CVE-2026-41310
- GitHub Advisory GHSA-88hf-wf7h-7w4m
- NVD CVE-2026-41310
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