CVE-2026-45287: Opentelemetry Telemetry Schema Files

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to version 0.0.17, `go.opentelemetry.io/otel/schema/v1.0` and `go.opentelemetry.io/otel/schema/v1.1` leaks one file descriptor on each successful `ParseFile` call. `ParseFile` opens the schema file and passes it to `Parse` without closing it; repeated parsing in a long-running process can exhaust the process file descriptor limit and cause denial of service. Exploitation depends on a consuming application exposing repeated schema parsing to an attacker-controlled path. Version 0.0.17 contains a patch for the issue.

Affected products

• Opentelemetry Telemetry Schema Files: before 0.0.17 (fixed in 0.0.17)

Published 2026-06-04. Last modified 2026-07-22.