OpenTelemetry-Go multi-value `baggage` header extraction causes excessive allocations (remote dos amplification)

• azl3 containerd2 2.1.6-1 on Azure Linux 3.0

• azl3 containerized-data-importer 1.62.0-3 on Azure Linux 3.0

• azl3 gh 2.62.0-15 on Azure Linux 3.0

• azl3 telegraf 1.31.0-19 on Azure Linux 3.0

• azl3 ignition-flatcar 2.22.0-5 on Azure Linux 3.0

• cbl2 etcd 3.5.28-1

• cbl2 etcd 3.5.28-1 on CBL-Mariner 2.0

• azl3 azurelinux-image-tools 1.2.0-2 on Azure Linux 3.0

SecurityAlert records field-level changes from the point we begin following a bulletin. Earlier vendor changes may not have a field-by-field record.

1. Oct 8, 2026 at 9:05 AM UTC
   • Added affected products: azl3 etcd 3.5.30-2 on Azure Linux 3.0, azl3 ignition-flatcar 2.22.0-2 on Azure Linux 3.0, azl3 ignition-flatcar 2.22.0-5 on Azure Linux 3.0, cbl2 etcd 3.5.28-1, cbl2 etcd 3.5.28-1 on CBL-Mariner 2.0.
   • Added fixed versions: 1.3.0-1, 2.22.0-3, 2.22.0-5, 3.5.30-2.
   • The vendor changed its remediation guidance.

1. Apr 11, 2026 at 1:03 AM UTC
   Published by Microsoft Security Response Center

   The publication date reported by the vendor.

2. Sep 25, 2026 at 2:40 AM UTC
   Updated by Microsoft Security Response Center

   The vendor changed the advisory after it was first published.

3. Sep 27, 2026 at 11:11 PM UTC
   Added to SecurityAlert

   We collected the advisory from the official source.

4. Nov 10, 2026 at 2:00 AM UTC
   Confirmed at the source

   Our collector saw this advisory during a later source check.