id: PYSEC-2023-207
modified: 2023-10-19T16:33:01.297810Z
published: 2023-10-15T19:15:00Z
aliases:
- CVE-2018-25091
- GHSA-gwvm-45gx-3cf8
details: '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).'
affected:
- package:
    ecosystem: PyPI
    name: urllib3
    purl: pkg:pypi/urllib3
  ranges:
  - type: GIT
    events:
    - introduced: "0"
    - fixed: adb358f8e06865406d1f05e581a16cbea2136fbc
    repo: https://github.com/urllib3/urllib3
  - type: ECOSYSTEM
    events:
    - introduced: "0"
    - fixed: 1.24.2
  versions:
  - "0.2"
  - "0.3"
  - 0.3.1
  - 0.4.0
  - 0.4.1
  - "1.0"
  - 1.0.1
  - 1.0.2
  - "1.1"
  - "1.10"
  - 1.10.1
  - 1.10.2
  - 1.10.3
  - 1.10.4
  - "1.11"
  - "1.12"
  - "1.13"
  - 1.13.1
  - "1.14"
  - "1.15"
  - 1.15.1
  - "1.16"
  - "1.17"
  - "1.18"
  - 1.18.1
  - "1.19"
  - 1.19.1
  - "1.2"
  - 1.2.1
  - 1.2.2
  - "1.20"
  - "1.21"
  - 1.21.1
  - "1.22"
  - "1.23"
  - "1.24"
  - 1.24.1
  - "1.3"
  - "1.4"
  - "1.5"
  - "1.6"
  - "1.7"
  - 1.7.1
  - "1.8"
  - 1.8.2
  - 1.8.3
  - "1.9"
  - 1.9.1
severity:
- type: CVSS_V3
  score: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
references:
- type: FIX
  url: https://github.com/urllib3/urllib3/compare/1.24.1...1.24.2
- type: REPORT
  url: https://github.com/urllib3/urllib3/issues/1510
- type: FIX
  url: https://github.com/urllib3/urllib3/issues/1510
- type: ADVISORY
  url: https://github.com/urllib3/urllib3/issues/1510
- type: FIX
  url: 
    https://github.com/urllib3/urllib3/commit/adb358f8e06865406d1f05e581a16cbea2136fbc
- type: ADVISORY
  url: https://github.com/advisories/GHSA-gwvm-45gx-3cf8