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python urllib3 vulnerabilities and exploits
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4.2
CVSSv3
CVE-2023-45803
urllib3 is a user-friendly HTTP client library for Python. urllib3 previously wouldn't remove the HTTP request body when an HTTP redirect response using status 301, 302, or 303 after the request had its method changed from one that could accept a request body (like `POST`) t...
Python Urllib3
Fedoraproject Fedora 38
6.1
CVSSv3
CVE-2018-25091
urllib3 prior to 1.24.2 does not remove the authorization HTTP header when following a cross-origin redirect (i.e., a redirect that differs in host, port, or scheme). This can allow for credentials in the authorization header to be exposed to unintended hosts or transmitted in cl...
Python Urllib3
8.1
CVSSv3
CVE-2023-43804
urllib3 is a user-friendly HTTP client library for Python. urllib3 doesn't treat the `Cookie` HTTP header special or provide any helpers for managing cookies over HTTP, that is the responsibility of the user. However, it is possible for a user to specify a `Cookie` header an...
Python Urllib3
Debian Debian Linux 10.0
Fedoraproject Fedora 37
Fedoraproject Fedora 38
Fedoraproject Fedora 39
3 Github repositories
5.7
CVSSv3
CVE-2021-3572
A flaw was found in python-pip in the way it handled Unicode separators in git references. A remote attacker could possibly use this issue to install a different revision on a repository. The highest threat from this vulnerability is to data integrity. This is fixed in python-pip...
Pypa Pip
Oracle Agile Plm 9.3.6
Oracle Communications Cloud Native Core Policy 1.15.0
Oracle Communications Cloud Native Core Network Function Cloud Native Environment 22.1.0
Oracle Communications Cloud Native Core Network Function Cloud Native Environment 1.10.0
Oracle Communications Cloud Native Core Policy 22.1.3
3 Github repositories
7.5
CVSSv3
CVE-2021-33503
An issue exists in urllib3 prior to 1.26.5. When provided with a URL containing many @ characters in the authority component, the authority regular expression exhibits catastrophic backtracking, causing a denial of service if a URL were passed as a parameter or redirected to via ...
Python Urllib3
Fedoraproject Fedora 33
Fedoraproject Fedora 34
Oracle Instantis Enterprisetrack 17.1
Oracle Instantis Enterprisetrack 17.2
Oracle Instantis Enterprisetrack 17.3
Oracle Enterprise Manager Ops Center 12.4.0.0
Oracle Zfs Storage Appliance Kit 8.8
1 Github repository
6.5
CVSSv3
CVE-2021-28363
The urllib3 library 1.26.x prior to 1.26.4 for Python omits SSL certificate validation in some cases involving HTTPS to HTTPS proxies. The initial connection to the HTTPS proxy (if an SSLContext isn't given via proxy_config) doesn't verify the hostname of the certificat...
Python Urllib3
Fedoraproject Fedora 34
Oracle Peoplesoft Enterprise Peopletools 8.59
1 Github repository
6.5
CVSSv3
CVE-2020-26137
urllib3 prior to 1.25.9 allows CRLF injection if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of putrequest(). NOTE: this is similar to CVE-2020-26116.
Python Urllib3
Canonical Ubuntu Linux 18.04
Canonical Ubuntu Linux 20.04
Canonical Ubuntu Linux 16.04
Debian Debian Linux 9.0
Oracle Zfs Storage Appliance Kit 8.8
Oracle Communications Cloud Native Core Network Function Cloud Native Environment 22.2.0
2 Github repositories
7.5
CVSSv3
CVE-2020-7212
The _encode_invalid_chars function in util/url.py in the urllib3 library 1.25.2 up to and including 1.25.7 for Python allows a denial of service (CPU consumption) because of an inefficient algorithm. The percent_encodings array contains all matches of percent encodings. It is not...
Python Urllib3
7.5
CVSSv3
CVE-2019-11324
The urllib3 library prior to 1.24.2 for Python mishandles certain cases where the desired set of CA certificates is different from the OS store of CA certificates, which results in SSL connections succeeding in situations where a verification failure is the correct outcome. This ...
Python Urllib3
Canonical Ubuntu Linux 16.04
Canonical Ubuntu Linux 18.04
Canonical Ubuntu Linux 18.10
Canonical Ubuntu Linux 19.04
3 Github repositories
6.1
CVSSv3
CVE-2019-11236
In the urllib3 library up to and including 1.24.1 for Python, CRLF injection is possible if the attacker controls the request parameter.
Python Urllib3
1 Github repository
CVSSv3
CVSSv2
CVSSv3
VMScore
Recommendations:
SSTI
CVE-2024-35863
CVE-2024-35910
man-in-the-middle
CVE-2024-35912
CVE-2024-25742
LFI
CVE-2024-32002
CVE-2024-22120
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