CVE-2018-25091

MEDIUM

urllib3 < 1.24.2 - Unauthenticated Credential Exposure via Cross-Origin Redirect

Title source: llm
STIX 2.1

Description

urllib3 before 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 cleartext. NOTE: this issue exists because of an incomplete fix for CVE-2018-20060 (which was case-sensitive).

References (3)

Core 3

Scores

CVSS v3 6.1
EPSS 0.0022
EPSS Percentile 44.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-601
Status published
Products (2)
pypi/urllib3 0 - 1.24.2PyPI
python/urllib3 < 1.24.2
Published Oct 15, 2023
Tracked Since Feb 18, 2026