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ALSA-2021:4160 Not scored

Moderate: python39:3.9 and python39-devel:3.9 security update

Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Security Fix(es): * python: Information disclosure via pydoc (CVE-2021-3426) * python: urllib: Regular expression DoS in AbstractBasicAuthHandler (CVE-2021-3733) * python-lxml: Missing input sanitization for formaction HTML5 attributes may lead to XSS (CVE-2021-28957) * python-ipaddress: Improper input validation of octal strings (CVE-2021-29921) * python-urllib3: ReDoS in the parsing of authority part of URL (CVE-2021-33503) * python-pip: Incorrect handling of unicode separators in git references (CVE-2021-3572) * python: urllib: HTTP client possible infinite loop on a 100 Continue response (CVE-2021-3737) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

Exploit probability Not scored
Published November 9, 2021
Required by Not available
Last source change February 4, 2026

02 / AFFECTED SOFTWARE

Affected packages

AlmaLinux:8 python39-six
AlmaLinux:8 python39-idna
AlmaLinux:8 python39-pluggy
AlmaLinux:8 python39-psycopg2-doc
AlmaLinux:8 python39-more-itertools
AlmaLinux:8 python39-psutil
AlmaLinux:8 python39-toml
AlmaLinux:8 python39-pyparsing
AlmaLinux:8 python39-numpy-f2py
AlmaLinux:8 python39-setuptools-wheel
AlmaLinux:8 python39-iniconfig
AlmaLinux:8 python39-wcwidth
AlmaLinux:8 python39-cryptography
AlmaLinux:8 python39-PyMySQL
AlmaLinux:8 python39-scipy
AlmaLinux:8 python39-Cython
AlmaLinux:8 python39-cffi
AlmaLinux:8 python39-mod_wsgi
AlmaLinux:8 python39-psycopg2
AlmaLinux:8 python39-py
AlmaLinux:8 python39-chardet
AlmaLinux:8 python39-pysocks
AlmaLinux:8 python39-numpy-doc
AlmaLinux:8 python39-psycopg2-tests
AlmaLinux:8 python39-requests
AlmaLinux:8 python39-pytest
AlmaLinux:8 python39-numpy
AlmaLinux:8 python39-pyyaml
AlmaLinux:8 python39-ply
AlmaLinux:8 python39-pycparser
AlmaLinux:8 python39-setuptools
AlmaLinux:8 python39-wheel
AlmaLinux:8 python39-packaging
AlmaLinux:8 python39-urllib3
AlmaLinux:8 python39-attrs
AlmaLinux:8 python39-wheel-wheel

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities ALSA-2021:4160

Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems. Security Fix(es): * python: Information disclosure via pydoc (CVE-2021-3426) * python: urllib: Regular expression DoS in AbstractBasicAuthHandler (CVE-2021-3733) * python-lxml: Missing input sanitization for formaction HTML5 attributes may lead to XSS (CVE-2021-28957) * python-ipaddress: Improper input validation of octal strings (CVE-2021-29921) * python-urllib3: ReDoS in the parsing of authority part of URL (CVE-2021-33503) * python-pip: Incorrect handling of unicode separators in git references (CVE-2021-3572) * python: urllib: HTTP client possible infinite loop on a 100 Continue response (CVE-2021-3737) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

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05 / REFERENCES

Further evidence