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Vulnerabilities

Security fix · CVE-2026-81872

OpenTelemetry-Go is the Go implementation of OpenTelemetry.

Published Sep 16, 2026 · catalog updated Nov 3, 2026 · OpenTelemetry-Go is the Go

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-81872. EPSS is 0.38%. Act only if a listed version of OpenTelemetry-Go is the Go is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (OpenTelemetry-Go is the Go).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Unknown—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.38%
Remediation
Advisory link
Affected products
Debian:13 golang-opentelemetry-otel · Debian:14 golang-opentelemetry-otel

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Debian:13 golang-opentelemetry-otel1.31.0-4, 1.31.0-5, 1.31.0-6
  • Debian:14 golang-opentelemetry-otel0 → 1.46.0-2

How to fix CVE-2026-81872

  • Upgrade

    CVE-2026-81872 lists a fix boundary at 1.46.0-2. Compare the installed build with that boundary before you change production.

  • Version check

    Fixed in 1.46.0-2 · 3 other ranges on the advisory

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-81872. EPSS is 0.38%. Act only if a listed version of OpenTelemetry-Go is the Go is installed.

Which versions are affected?

Compare what you have installed with 1.31.0-4, 1.31.0-5, 1.31.0-6, 0 → 1.46.0-2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.38%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Debian security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 16, 2026 · Trivy Vulnerability DB

    Detected

    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 buf

  2. Nov 3, 2026 · Trivy Vulnerability DB

    Fix available

    golang-opentelemetry-otel fixed in 1.46.0-2

  3. Nov 3, 2026 · Trivy Vulnerability DB

    Fix available

    golang-opentelemetry-otel fixed in 1.46.0-2

  4. Nov 3, 2026 · Trivy Vulnerability DB

    Updated

    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 buf

Sources

  • CVE.orgVulnerability recordCVE-2026-81872

    Official CVE identifier

    cve.org
  • Trivy Vulnerability DBPackage advisoryDEBIAN-CVE-2026-81872

    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. NewBa

    osv.dev

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 4, 2026
  • Trivy Vulnerability DBNov 3, 2026