{
  "cveId": "CVE-2026-81872",
  "url": "https://patchblox.com/security/cve/CVE-2026-81872",
  "summary": "CVE-2026-81872 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2026-81872, released September 16, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "OpenTelemetry-Go: BatchProcessor can busy-spin when export buffer is full",
  "description": "OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to version 0.21.0, the go.opentelemetry.io/otel/sdk/log BatchingProcessor can enter a tight CPU loop when attacker-driven log emission fills its asynchronous export buffer while the exporter is backpressured. NewBatchingProcessor wraps the exporter with newBufferExporter(exporter, 1), and the poll loop calls queue.TryDequeue and bufferExporter.EnqueueExport before immediately signaling pollTrigger whenever the queue remains at or above batchSize. Because a failed nonblocking EnqueueExport leaves the queue length unchanged, the processor repeatedly retries without waiting for its ticker, exhausting CPU and degrading or denying service in the embedding process. This issue is fixed in version 0.21.0.",
  "published": "2026-09-16T21:17:22Z",
  "severity": "Low",
  "cwe": "Uncontrolled Resource Consumption",
  "epss": 0.00383,
  "epssPercentile": 0.32594,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-81872",
  "fixes": [
    {
      "platform": "linux",
      "product": "distribution",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "3.1.1-160000.4.1",
      "fix": "OPENSUSE-SU-2026:22010-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22010-1",
      "released": "2026-10-01T12:14:32Z"
    },
    {
      "platform": "linux",
      "product": "distribution",
      "release": "sles 16.0",
      "fixedVersion": "3.1.1-160000.4.1",
      "fix": "SUSE-SU-2026:23990-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-23990-1",
      "released": "2026-10-01T12:12:02Z"
    },
    {
      "platform": "linux",
      "product": "golang-opentelemetry-otel",
      "release": "Debian 14",
      "fixedVersion": "1.46.0-2",
      "fix": "DEBIAN-CVE-2026-81872",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-81872",
      "released": "2026-09-16T21:17:22Z"
    },
    {
      "platform": "linux",
      "product": "helm",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "4.3.0-160000.1.1",
      "fix": "OPENSUSE-SU-2026:21983-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21983-1",
      "released": "2026-09-30T17:58:26Z"
    },
    {
      "platform": "linux",
      "product": "helm",
      "release": "sles 15.6",
      "fixedVersion": "3.22.1-150000.1.104.1",
      "fix": "SUSE-SU-2026:5119-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-5119-1",
      "released": "2026-11-07T00:43:02Z"
    },
    {
      "platform": "linux",
      "product": "helm",
      "release": "sles 15.7",
      "fixedVersion": "3.22.1-150000.1.104.1",
      "fix": "SUSE-SU-2026:5119-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-5119-1",
      "released": "2026-11-07T00:43:02Z"
    },
    {
      "platform": "linux",
      "product": "helm",
      "release": "sles 16.0",
      "fixedVersion": "4.3.0-160000.1.1",
      "fix": "SUSE-SU-2026:23984-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-23984-1",
      "released": "2026-09-30T17:49:13Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}