{"cve":"CVE-2026-81870","nvd":{"published":"2026-09-16T20:17:32.733","modified":"2026-09-30T17:51:56.193","status":"Deferred","description":"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_v4":{"vector":"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","score":2.0},"cvss_v3":null,"cwes":["CWE-200","CWE-532"],"references":["https://github.com/open-telemetry/opentelemetry-go/commit/3a1412d2b3bc4e4231fbeac2ed42117ae541bb38","https://github.com/open-telemetry/opentelemetry-go/pull/8438","https://github.com/open-telemetry/opentelemetry-go/releases/tag/exporters/zipkin/v1.45.0","https://github.com/open-telemetry/opentelemetry-go/releases/tag/sdk/v1.45.0","https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-8wmf-6v46-5gfg"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:54:41.405518556+00:00"},"epss":{"cve":"CVE-2026-81870","score":0.00266,"percentile":0.18335,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-8wmf-6v46-5gfg","url":"https://osv.dev/vulnerability/GHSA-8wmf-6v46-5gfg","summary":"OpenTelemetry-Go: Exporter config logging may leak endpoint URLs in info logs","modified":"2026-10-01T20:55:52.479756803Z","packages":[{"ecosystem":"Go","name":"go.opentelemetry.io/otel/sdk","purl":"pkg:golang/go.opentelemetry.io/otel/sdk","ranges":[">=1.5.0 <1.45.0"],"fixed":["1.45.0"]},{"ecosystem":"Go","name":"go.opentelemetry.io/otel/exporters/otlp/otlptrace","purl":"pkg:golang/go.opentelemetry.io/otel/exporters/otlp/otlptrace","ranges":[">=1.5.0 <1.45.0"],"fixed":["1.45.0"]},{"ecosystem":"Go","name":"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc","purl":"pkg:golang/go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc","ranges":[">=1.5.0 <1.45.0"],"fixed":["1.45.0"]},{"ecosystem":"Go","name":"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp","purl":"pkg:golang/go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp","ranges":[">=1.5.0 <1.45.0"],"fixed":["1.45.0"]},{"ecosystem":"Go","name":"go.opentelemetry.io/otel/exporters/zipkin","purl":"pkg:golang/go.opentelemetry.io/otel/exporters/zipkin","ranges":[">=1.5.0 <1.45.0"],"fixed":["1.45.0"]}]},{"id":"GO-2026-6505","url":"https://osv.dev/vulnerability/GO-2026-6505","summary":"OpenTelemetry-Go: Exporter config logging may leak endpoint URLs in info logs in go.opentelemetry.io/otel/exporters/otlp/otlptrace","modified":"2026-10-01T20:45:11.273005775Z","packages":[{"ecosystem":"Go","name":"go.opentelemetry.io/otel/exporters/otlp/otlptrace","purl":"pkg:golang/go.opentelemetry.io/otel/exporters/otlp/otlptrace","ranges":[">=1.5.0 <1.45.0"],"fixed":["1.45.0"]},{"ecosystem":"Go","name":"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc","purl":"pkg:golang/go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc","ranges":[">=1.5.0 <1.45.0"],"fixed":["1.45.0"]},{"ecosystem":"Go","name":"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp","purl":"pkg:golang/go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp","ranges":[">=1.5.0 <1.45.0"],"fixed":["1.45.0"]},{"ecosystem":"Go","name":"go.opentelemetry.io/otel/exporters/zipkin","purl":"pkg:golang/go.opentelemetry.io/otel/exporters/zipkin","ranges":[">=1.5.0 <1.45.0"],"fixed":["1.45.0"]},{"ecosystem":"Go","name":"go.opentelemetry.io/otel/sdk","purl":"pkg:golang/go.opentelemetry.io/otel/sdk","ranges":[">=1.5.0 <1.45.0"],"fixed":["1.45.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}