messagepack security advisories

1 threat alert tracking vulnerabilities and security advisories that affect messagepack products.

Vulnios monitors messagepack CVE feeds, vendor advisories, CISA KEV listings, and exploit-prediction data continuously. Each alert below is enriched with severity, exploitation status, affected products, and a remediation path. Use this page to scan recent messagepack security news in one place, or click into an individual alert for full detail.

Critical Vulnerability: CVE-2026-48509 — messagepack — messagepack
MessagePack for C# is a MessagePack serializer for C#. Prior to 2.5.301 and 3.1.7, the parameterless MessagePackInputFormatter() constructor uses default serializer options, which resolve to MessagePa
criticalCVE-2026-48509

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messagepack security advisories

Critical Vulnerability: CVE-2026-48509 — messagepack — messagepack

Track messagepack exposure across your environment