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CVE-2026-44163 is a denial-of-service vulnerability in fluent-plugin-opentelemetry affecting the in_opentelemetry HTTP input. The issue is caused by missing strict size limits on incoming HTTP requests and on decompressed payloads. As a result, an attacker can submit excessively large request bodies or crafted compressed payloads that expand significantly during decompression, leading to uncontrolled memory consumption in the Fluentd process handling OpenTelemetry ingestion.
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