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Status published
Critical
CVE-2018-20060
urllib3 before version 1.23 does not remove the Authorization HTTP...
Vulnerability Description
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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://github.com/urllib3/urllib3/issues/1316
- https://github.com/urllib3/urllib3/pull/1346
- https://github.com/urllib3/urllib3/blob/master/CHANGES.rst
- https://bugzilla.redhat.com/show_bug.cgi?id=1649153
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5SJERZEJDSUYQP7BNBXMBHRHGY26HRZD/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XWP36YW3KSVLXDBY3QJKDYEPCIMN3VQZ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BXLAXHM3Z6DUCXZ7ZXZ2EAYJXWDCZFCT/
- https://usn.ubuntu.com/3990-1/
- https://access.redhat.com/errata/RHSA-2019:2272
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00039.html
- https://lists.debian.org/debian-lts-announce/2021/06/msg00015.html
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Affected Vendor
python
View all reports →Affected Software
urllib3, fedora
Vulnerable Versions:
0, 28, 29, 30
Timeline
Official Publish:
December 11th, 2018
Last Modified:
December 27th, 2024
Added to House:
July 20th, 2026
CVSS Vectors
V3:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.