{
"id": "GHSA-88hf-wf7h-7w4m",
"aliases": [
"CVE-2026-41310"
],
"details": "### Summary\n\nThe Zipkin exporter remote endpoint cache accepted unbounded key growth derived from span attributes. In high-cardinality scenarios, this could increase process memory usage over time and degrade availability.\n\n### Details\n\n- Introduce a bounded, thread-safe LRU cache for remote endpoints.\n- Enforce fixed maximum size to prevent unbounded growth.\n\n### Impact\n\n- A process using Zipkin export for client/producer spans could experience avoidable memory growth under sustained unique remote endpoint values.\n\n### Resources\n\n[#7081](https://github.com/open-telemetry/opentelemetry-dotnet/pull/7081)",
"summary": "OpenTelemetry's Zipkin remote endpoint cache could grow without bounds and increase memory pressure",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.15.3"
}
]
}
],
"package": {
"name": "OpenTelemetry.Exporter.Zipkin",
"ecosystem": "NuGet"
},
"database_specific": {
"last_known_affected_version_range": "<= 1.15.2"
}
}
],
"modified": "2026-05-08T19:32:38Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
}
],
"published": "2026-04-28T23:23:28Z",
"references": [
{
"url": "https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-88hf-wf7h-7w4m",
"type": "WEB"
},
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41310",
"type": "ADVISORY"
},
{
"url": "https://github.com/open-telemetry/opentelemetry-dotnet/pull/7081",
"type": "WEB"
},
{
"url": "https://github.com/open-telemetry/opentelemetry-dotnet/commit/c724f4bd6fd88e9a599af1668bf7af9487155b62",
"type": "WEB"
},
{
"url": "https://github.com/open-telemetry/opentelemetry-dotnet",
"type": "PACKAGE"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-400",
"CWE-770"
],
"severity": "MODERATE",
"github_reviewed": true,
"nvd_published_at": "2026-05-06T22:16:25Z",
"github_reviewed_at": "2026-04-28T23:23:28Z"
}
}