VULNERABILITY INTELLIGENCE
CVE-2018-20060
CVSS score9.8 CRITICAL
EPSS probability4.49%
CISA KEVNot currently listed
Published2018-12-11
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
Primary references
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org — Issue Tracking, Mitigation, Patch, Third Party Advisory
- cve@mitre.org — Release Notes, Third Party Advisory
- cve@mitre.org — Third Party Advisory
- cve@mitre.org — Third Party Advisory
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org
- cve@mitre.org
- af854a3a-2127-422b-91ae-364da2661108