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python: Web cache poisoning via urllib.parse.parse_qsl and urllib.parse.parse_qs by using a semicolon in query parameters

🗓️ 24 Aug 2021 12:50:36Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 4 Views

Web cache poisoning in Python using urllib.parse.parse_qsl and parse_qs with semicolon cloaking.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux7ppc64lerh-python38-python3.8.11-2.el7rh-python38-python-3.8.11-2.el7.ppc64le.rpm
Red Hat Enterprise Linux7s390xrh-python38-python3.8.11-2.el7rh-python38-python-3.8.11-2.el7.s390x.rpm
Red Hat Enterprise Linux7x86_64rh-python38-python3.8.11-2.el7rh-python38-python-3.8.11-2.el7.x86_64.rpm
Red Hat Enterprise Linux7noarchrh-python38-python-babel2.7.0-12.el7rh-python38-python-babel-2.7.0-12.el7.noarch.rpm
Red Hat Enterprise Linux7ppc64lerh-python38-python-cryptography2.8-5.el7rh-python38-python-cryptography-2.8-5.el7.ppc64le.rpm
Red Hat Enterprise Linux7s390xrh-python38-python-cryptography2.8-5.el7rh-python38-python-cryptography-2.8-5.el7.s390x.rpm
Red Hat Enterprise Linux7x86_64rh-python38-python-cryptography2.8-5.el7rh-python38-python-cryptography-2.8-5.el7.x86_64.rpm
Red Hat Enterprise Linux7ppc64lerh-python38-python-cryptography-debuginfo2.8-5.el7rh-python38-python-cryptography-debuginfo-2.8-5.el7.ppc64le.rpm
Red Hat Enterprise Linux7s390xrh-python38-python-cryptography-debuginfo2.8-5.el7rh-python38-python-cryptography-debuginfo-2.8-5.el7.s390x.rpm
Red Hat Enterprise Linux7x86_64rh-python38-python-cryptography-debuginfo2.8-5.el7rh-python38-python-cryptography-debuginfo-2.8-5.el7.x86_64.rpm
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03 Jul 2026 02:09Current
6.8Medium risk
Vulners AI Score6.8
CVSS 24
CVSS 3.15.9
EPSS0.36006
SSVC
4