Improper Certificate Validation Affecting github.com/open-telemetry/opentelemetry-go/exporters/otlp/otlplog/otlploggrpc package, versions <0.21.0
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMOPENTELEMETRYOPENTELEMETRYGOEXPORTERSOTLPOTLPLOGOTLPLOGGRPC-19883614
- published17 Sept 2026
- disclosed16 Sept 2026
- creditRobert Pająk ·
Introduced: 16 Sep 2026
NewCVE-2026-81871 (opens in a new tab)How to fix?
Upgrade github.com/open-telemetry/opentelemetry-go/exporters/otlp/otlplog/otlploggrpc to version 0.21.0 or higher.
Overview
Affected versions of this package are vulnerable to Improper Certificate Validation due to the newGRPCDialOptions not applying the loaded TLS configuration from environment variables when creating gRPC transport credentials. An attacker can intercept or spoof the collector connection using a system-trusted certificate to read or alter log telemetry by exploiting the lack of mutual TLS or certificate pinning.