Amazon Linux 2 (EOS) Security Advisory: ALAS2-2026-3996
Advisory Released Date: 2026-10-12
Advisory Updated Date: 2026-10-12
Severity:
Medium
Issue Overview:
parse_date() -- and str2time(), which delegates to it -- used regexes with
ambiguous adjacent greedy runs (year/clock/timezone digits and
timezone/ASCII-timezone letters) before a trailing anchor. A valid-looking
date prefix followed by a long interior run of digits, letters, or whitespace
and a trailing junk character forced O(N^2) backtracking, so a ~100 KB string
burned tens of seconds of CPU: a denial of service. (CVE-2026-14741)
Affected Packages:
perl-HTTP-Date
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update perl-HTTP-Date or yum update --advisory ALAS2-2026-3996 to update your system.
New Packages:
noarch:
perl-HTTP-Date-6.02-8.amzn2.0.1.noarch
src:
perl-HTTP-Date-6.02-8.amzn2.0.1.src