Amazon Linux 2027 Preview Security Advisory: ALAS2027-2026-078
Advisory Released Date: 2026-09-28
Advisory Updated Date: 2026-11-02
Severity:
Important
Issue Overview:
Backtracking leads to exponential load time in libyaml library. (CVE-2026-63676)
Affected Packages:
perl-YAML
Issue Correction:
Run dnf update perl-YAML --releasever 2027.0.20260928 or dnf update --advisory ALAS2027-2026-078 --releasever 2027.0.20260928 to update your system.
New Packages:
noarch:
perl-YAML-1.32.1-1.amzn2027.noarch
src:
perl-YAML-1.32.1-1.amzn2027.src