Amazon Linux 2 Security Advisory: ALAS2-2026-3128
Advisory Released Date: 2026-01-21
Advisory Updated Date: 2026-01-21
Severity:
Medium
Issue Overview:
When building nested elements using xml.dom.minidom methods such as appendChild() that have a dependency on _clear_id_cache() the algorithm is quadratic. Availability can be impacted when building excessively nested documents. (CVE-2025-12084)
Affected Packages:
python
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 python or yum update --advisory ALAS2-2026-3128 to update your system.
New Packages:
aarch64:
python-2.7.18-1.amzn2.0.15.aarch64
python-libs-2.7.18-1.amzn2.0.15.aarch64
python-devel-2.7.18-1.amzn2.0.15.aarch64
python-tools-2.7.18-1.amzn2.0.15.aarch64
tkinter-2.7.18-1.amzn2.0.15.aarch64
python-test-2.7.18-1.amzn2.0.15.aarch64
python-debug-2.7.18-1.amzn2.0.15.aarch64
python-debuginfo-2.7.18-1.amzn2.0.15.aarch64
i686:
python-2.7.18-1.amzn2.0.15.i686
python-libs-2.7.18-1.amzn2.0.15.i686
python-devel-2.7.18-1.amzn2.0.15.i686
python-tools-2.7.18-1.amzn2.0.15.i686
tkinter-2.7.18-1.amzn2.0.15.i686
python-test-2.7.18-1.amzn2.0.15.i686
python-debug-2.7.18-1.amzn2.0.15.i686
python-debuginfo-2.7.18-1.amzn2.0.15.i686
src:
python-2.7.18-1.amzn2.0.15.src
x86_64:
python-2.7.18-1.amzn2.0.15.x86_64
python-libs-2.7.18-1.amzn2.0.15.x86_64
python-devel-2.7.18-1.amzn2.0.15.x86_64
python-tools-2.7.18-1.amzn2.0.15.x86_64
tkinter-2.7.18-1.amzn2.0.15.x86_64
python-test-2.7.18-1.amzn2.0.15.x86_64
python-debug-2.7.18-1.amzn2.0.15.x86_64
python-debuginfo-2.7.18-1.amzn2.0.15.x86_64