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Microsoft Security Response CenterCVE-2026-72854

msgpack-c Integer Overflow in msgpack_unpacker_expand_buffer Causes a False-Success Undersized Reservation

Mariner

Read the vendor bulletin Get alerts for azl3 fluent-bit 3.1.10-6 on Azure Linux
5.3CVSS out of 10Medium severity
Scope

What the vendor says is affected

  • azl3 fluent-bit 3.1.10-6 on Azure Linux 3.0
  • azl3 lttng-tools 2.13.11-1 on Azure Linux 3.0
  • azl3 msgpack 3.3.0-1 on Azure Linux 3.0
Timeline

When this advisory changed

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.

Vulnerabilities

CVEs named in this advisory

CVE-2026-72854View CVSS, KEV, EPSS, and threat context
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