CVE-2026-81870OpenTelemetry-Go: Exporter config logging may leak endpoint URLs in info logs
Updated under an hour ago ()
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It affects open-telemetry opentelemetry-go. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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OpenTelemetry-Go is the Go implementation of OpenTelemetry. From version 1.5.0 to 1.44.0, sdk/trace.NewTracerProvider emits a TracerProvider created internal Info-level diagnostic event whose MarshalLog implementations recursively include span processor, exporter, and client configuration. Applications that call otel.SetLogger to enable OpenTelemetry internal Info logging can therefore record OTLP gRPC and HTTP collector endpoints, the OTLP HTTP Insecure flag, and complete Zipkin collector URLs. A person or system with access to those logs can learn internal collector topology and can recover credentials or tokens embedded in Zipkin URL user information or query strings. The default OpenTelemetry logger does not emit the event, and this path does not log OTLP authentication headers, TLS key material, or span payloads. This issue is fixed in version 1.45.0.
- CVSS
- 2.0 LOW (v4.0, CNA)CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- Weakness (CWE)
- CWE-200, CWE-532
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Sep 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
open-telemetry opentelemetry-go open_telemetry:opentelemetry_go (from the name) | from 1.5.0, < 1.45.0 | CNA record |
References
- https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-8wmf-6v46-5gfgx-refsource-confirm
- https://github.com/open-telemetry/opentelemetry-go/pull/8438x-refsource-misc
- https://github.com/open-telemetry/opentelemetry-go/commit/3a1412d2b3bc4e4231fbeac2ed42117ae541bb38x-refsource-misc
- https://github.com/open-telemetry/opentelemetry-go/releases/tag/exporters/zipkin/v1.45.0x-refsource-misc
- https://github.com/open-telemetry/opentelemetry-go/releases/tag/sdk/v1.45.0x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.