Libsoup: libsoup: proxy credentials leak to destination server via proxy-authorization header in connect tunnels

• azl3 libsoup 3.4.4-16 on Azure Linux 3.0

• azl3 libsoup 3.4.4-17 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. Sep 28, 2026 at 11:20 AM UTC
   • Added affected products: azl3 libsoup 3.4.4-17 on Azure Linux 3.0.
   • The vendor changed its remediation guidance.

1. Aug 7, 2026 at 12:24 AM UTC
   Published by Microsoft Security Response Center

   The publication date reported by the vendor.

2. Sep 3, 2026 at 11:40 PM UTC
   Added to SecurityAlert

   We collected the advisory from the official source.

3. Sep 24, 2026 at 2:39 AM UTC
   Updated by Microsoft Security Response Center

   The vendor changed the advisory after it was first published.

4. Oct 28, 2026 at 9:50 AM UTC
   Confirmed at the source

   Our collector saw this advisory during a later source check.