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CVE-2026-45287

5.5 · MEDIUM

OpenTelemetry-Go is the Go implementation of OpenTelemetry.

Published Jun 4, 2026opentelemetryCWE-772EPSS 0.17%

Overview

CVE-2026-45287 is a medium-severity vulnerability affecting opentelemetry telemetry_schema_files. It was published on June 4, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories and patches from opentelemetry. Update telemetry_schema_files to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
opentelemetrytelemetry_schema_files>= 0, < 0.0.17Affected

References

GitHubgithub.com/open-telemetry/opentelemetry-go/commit/e72a235518cb773137efd80336a179028bc34684GitHubgithub.com/open-telemetry/opentelemetry-go/commit/f12d198f161b61735d65705248715aa97021ba8dGitHubgithub.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-995v-fvrw-c78mGitHubgithub.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-995v-fvrw-c78m

How CyberStrike helps

Frequently asked questions

What is CVE-2026-45287?

CVE-2026-45287 is a medium-severity vulnerability affecting opentelemetry telemetry_schema_files. It was published on June 4, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-45287?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-45287?

Check the references section for vendor advisories and patches from opentelemetry. Update telemetry_schema_files to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-45287?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-45287 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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