Python: >> Urllib3 Security Vulnerabilities
The urllib3 library before 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 is related to use of the ssl_context, ca_certs, or ca_certs_dir argument.
CVSS Score
7.5
EPSS Score
0.014
Published
2019-04-18
In the urllib3 library through 1.24.1 for Python, CRLF injection is possible if the attacker controls the request parameter.
CVSS Score
6.1
EPSS Score
0.006
Published
2019-04-15
urllib3 before version 1.23 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 cleartext.
CVSS Score
9.8
EPSS Score
0.005
Published
2018-12-11
Versions 1.17 and 1.18 of the Python urllib3 library suffer from a vulnerability that can cause them, in certain configurations, to not correctly validate TLS certificates. This places users of the library with those configurations at risk of man-in-the-middle and information leakage attacks. This vulnerability affects users using versions 1.17 and 1.18 of the urllib3 library, who are using the optional PyOpenSSL support for TLS instead of the regular standard library TLS backend, and who are using OpenSSL 1.1.0 via PyOpenSSL. This is an extremely uncommon configuration, so the security impact of this vulnerability is low.
CVSS Score
3.7
EPSS Score
0.001
Published
2017-01-11
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