Amazon Linux 2023 Security Advisory: ALAS2023-2026-1588
Advisory Released Date: 2026-04-30
Advisory Updated Date: 2026-04-30
Severity:
Medium
Issue Overview:
In Tornado before 6.5.5, cookie attribute injection could occur because the domain, path, and samesite arguments to .RequestHandler.set_cookie were not checked for crafted characters. (CVE-2026-35536)
Affected Packages:
python3.13-tornado
Issue Correction:
Run dnf update python3.13-tornado --releasever 2023.11.20260427 or dnf update --advisory ALAS2023-2026-1588 --releasever 2023.11.20260427 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation
New Packages:
aarch64:
python3.13-tornado-doc-6.4.2-1.amzn2023.0.3.aarch64
python3.13-tornado-debuginfo-6.4.2-1.amzn2023.0.3.aarch64
python3.13-tornado-debugsource-6.4.2-1.amzn2023.0.3.aarch64
python3.13-tornado-6.4.2-1.amzn2023.0.3.aarch64
src:
python3.13-tornado-6.4.2-1.amzn2023.0.3.src
x86_64:
python3.13-tornado-doc-6.4.2-1.amzn2023.0.3.x86_64
python3.13-tornado-debugsource-6.4.2-1.amzn2023.0.3.x86_64
python3.13-tornado-debuginfo-6.4.2-1.amzn2023.0.3.x86_64
python3.13-tornado-6.4.2-1.amzn2023.0.3.x86_64