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ALSA-2021:4151 Not scored

Moderate: python27:2.7 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: Unsafe use of eval() on data retrieved via HTTP in the test suite (CVE-2020-27619) * python-jinja2: ReDoS vulnerability in the urlize filter (CVE-2020-28493) * python-babel: Relative path traversal allows attacker to load arbitrary locale files and execute arbitrary code (CVE-2021-20095, CVE-2021-42771) * python-pygments: Infinite loop in SML lexer may lead to DoS (CVE-2021-20270) * python: Web cache poisoning via urllib.parse.parse_qsl and urllib.parse.parse_qs by using a semicolon in query parameters (CVE-2021-23336) * python-pygments: ReDoS in multiple lexers (CVE-2021-27291) * python-lxml: Missing input sanitization for formaction HTML5 attributes may lead to XSS (CVE-2021-28957) 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 python2-sqlalchemy
AlmaLinux:8 python2-docs-info
AlmaLinux:8 python2-pyyaml
AlmaLinux:8 python2-pluggy
AlmaLinux:8 python2-pytest
AlmaLinux:8 python2-ipaddress
AlmaLinux:8 python-psycopg2-doc
AlmaLinux:8 python2-numpy-f2py
AlmaLinux:8 babel
AlmaLinux:8 python2-babel
AlmaLinux:8 python2-pymongo-gridfs
AlmaLinux:8 python2-mock
AlmaLinux:8 python2-requests
AlmaLinux:8 python2-psycopg2-debug
AlmaLinux:8 python2-coverage
AlmaLinux:8 python2-urllib3
AlmaLinux:8 python2-setuptools_scm
AlmaLinux:8 python2-wheel
AlmaLinux:8 python2-pygments
AlmaLinux:8 python2-pysocks
AlmaLinux:8 python2-virtualenv
AlmaLinux:8 python2-six
AlmaLinux:8 python2-scipy
AlmaLinux:8 python-sqlalchemy-doc
AlmaLinux:8 python2-setuptools-wheel
AlmaLinux:8 python2-chardet
AlmaLinux:8 python2-pytest-mock
AlmaLinux:8 python2-pymongo
AlmaLinux:8 python2-setuptools
AlmaLinux:8 python2-rpm-macros
AlmaLinux:8 python2-numpy
AlmaLinux:8 python2-docs
AlmaLinux:8 python2-nose
AlmaLinux:8 python2-dns
AlmaLinux:8 python2-backports
AlmaLinux:8 python2-jinja2
AlmaLinux:8 python2-docutils
AlmaLinux:8 python2-attrs
AlmaLinux:8 python2-PyMySQL
AlmaLinux:8 python-nose-docs
AlmaLinux:8 python2-bson
AlmaLinux:8 python2-backports-ssl_match_hostname
AlmaLinux:8 python2-funcsigs
AlmaLinux:8 python2-py
AlmaLinux:8 python2-numpy-doc
AlmaLinux:8 python2-markupsafe
AlmaLinux:8 python2-Cython
AlmaLinux:8 python2-psycopg2-tests
AlmaLinux:8 python2-wheel-wheel
AlmaLinux:8 python2-idna
AlmaLinux:8 python2-pytz
AlmaLinux:8 python2-psycopg2

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities ALSA-2021:4151

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: Unsafe use of eval() on data retrieved via HTTP in the test suite (CVE-2020-27619) * python-jinja2: ReDoS vulnerability in the urlize filter (CVE-2020-28493) * python-babel: Relative path traversal allows attacker to load arbitrary locale files and execute arbitrary code (CVE-2021-20095, CVE-2021-42771) * python-pygments: Infinite loop in SML lexer may lead to DoS (CVE-2021-20270) * python: Web cache poisoning via urllib.parse.parse_qsl and urllib.parse.parse_qs by using a semicolon in query parameters (CVE-2021-23336) * python-pygments: ReDoS in multiple lexers (CVE-2021-27291) * python-lxml: Missing input sanitization for formaction HTML5 attributes may lead to XSS (CVE-2021-28957) 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