CVE-2018-25091

unknown
Published 2023-10-15 · Modified 2023-11-08
CVSS v3
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v2
VIR risk

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).

Predictions

Exploit likelihood
30%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-25091

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2018-25091.html

OS impact

OSVersionStatusFixed in
suse slesaffected
debian debianbookwormfixed1.25.6-4
debian debianbullseyefixed1.25.6-4
debian debianforkyfixed1.25.6-4
debian debiansidfixed1.25.6-4
debian debiantrixiefixed1.25.6-4

Package impact

EcosystemPackageVulnerableFixed
python PyPIurllib3<1.24.21.24.2
python PyPIurllib3<adb358f8e06865406d1f05e581a16cbea2136fbc||<1.24.2adb358f8e06865406d1f05e581a16cbea2136fbc

References

Verify integrity in audit chain (admin only). AS-IS.