eml_parser: DoS via deeply nested parens in Received headers

• azl3 perl-XML-Parser 2.47-2 on Azure Linux 3.0

Separate remediation guidance was not included in the collected bulletin.

1. Aug 27, 2026 at 1:02 AM UTC
   Published by Microsoft Security Response Center

   The publication date reported by the vendor.

2. Sep 2, 2026 at 11:10 AM UTC
   Added to SecurityAlert

   We collected the advisory from the official source.

3. Oct 28, 2026 at 3:45 AM UTC
   Confirmed at the source

   Our collector saw this advisory during a later source check.