Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.
VOLERION
Volerion Security Research

NOT DEFERRED DATABASE

VULNERABILITIES

CVE-2018-25091 Details

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).

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.1 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://github.com/urllib3/urllib3/commit/adb358f8e06865406d1f05e581a16cbea2136fbc CVEPatch
https://github.com/urllib3/urllib3/compare/1.24.1...1.24.2 CVEPatch
https://github.com/urllib3/urllib3/issues/1510 CVEIssue TrackingPatchVendor Advisory
https://github.com/urllib3/urllib3/commit/adb358f8e06865406d1f05e581a16cbea2136fbc [email protected]Patch
https://github.com/urllib3/urllib3/compare/1.24.1...1.24.2 [email protected]Patch

see all 6 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-601URL Redirection to Untrusted Site ('Open Redirect')[email protected]

Affected Products

ProductVersions
python urllib3
< 1.24.2

CPE

  • cpe:2.3:a:python:urllib3:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2018-25091
NVD Published Date:
Oct 15, 2023
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2018-25091 Details - Not Deferred