CVE catalog
CVE-2018-25091
python-urllib3: CVE-2018-25091
- Severity
- Medium · CVSS 6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.59% · Oct 27, 2026
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).
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | python-urllib3 | sid | 2.8.0-2 | fixed |
| Debian | python-urllib3 | forky | 2.8.0-2 | fixed |
| Debian | python-urllib3 | trixie | 2.3.0-3+deb13u2 | fixed |
| Debian | python-urllib3 | trixie-security | 2.3.0-3+deb13u2 | fixed |
| Debian | python-urllib3 | bookworm | 1.26.12-1+deb12u4 | fixed |
| Debian | python-urllib3 | bookworm-security | 1.26.12-1+deb12u4 | fixed |
| Ubuntu | python-pip | pro | 9.0.1-2 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.1 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.2 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.3 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.4 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.5 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.5+esm2 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.5+esm3 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.6 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.6+esm1 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.7 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.7+esm1 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.8 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.8+esm1 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.8+esm2 | fixed |
| Ubuntu | python-pip | 20.04 | 18.1-5 | vulnerable |
| Ubuntu | python-pip | 20.04 | 18.1-5build1 | vulnerable |
| Ubuntu | python-pip | 20.04 | 18.1-5ubuntu1 | vulnerable |
| Ubuntu | python-pip | 20.04 | 20.0.2-2 | vulnerable |
| Ubuntu | python-pip | 20.04 | 20.0.2-4 | vulnerable |
| Ubuntu | python-pip | 20.04 | 20.0.2-5 | vulnerable |
| Ubuntu | python-pip | 20.04 | 20.0.2-5ubuntu1 | vulnerable |
| Ubuntu | python-pip | 20.04 | 20.0.2-5ubuntu1.1 | vulnerable |
| Ubuntu | python-pip | 20.04 | 20.0.2-5ubuntu1.3 | vulnerable |
| Ubuntu | python-pip | 20.04 | 20.0.2-5ubuntu1.4 | vulnerable |
| Ubuntu | python-pip | 20.04 | 20.0.2-5ubuntu1.5 | vulnerable |
| Ubuntu | python-pip | 20.04 | 20.0.2-5ubuntu1.6 | vulnerable |
| Ubuntu | python-pip | 20.04 | 20.0.2-5ubuntu1.7 | vulnerable |
| Ubuntu | python-pip | 20.04 | 20.0.2-5ubuntu1.8 | vulnerable |
| Ubuntu | python-pip | 20.04 | 20.0.2-5ubuntu1.9 | vulnerable |
| Ubuntu | python-pip | 20.04 | 20.0.2-5ubuntu1.10 | fixed |
| Ubuntu | python-pip | 22.04 | 20.3.4-4 | vulnerable |
| Ubuntu | python-pip | 22.04 | 21.3.1+dfsg-3 | vulnerable |
| Ubuntu | python-pip | 22.04 | 22.0.2+dfsg-1 | vulnerable |
| Ubuntu | python-pip | 22.04 | 22.0.2+dfsg-1ubuntu0.1 | vulnerable |
| Ubuntu | python-pip | 22.04 | 22.0.2+dfsg-1ubuntu0.2 | vulnerable |
| Ubuntu | python-pip | 22.04 | 22.0.2+dfsg-1ubuntu0.3 | vulnerable |
| Ubuntu | python-pip | 22.04 | 22.0.2+dfsg-1ubuntu0.4 | fixed |
| Ubuntu | python-urllib3 | pro | 1.21.1-1 | vulnerable |
| Ubuntu | python-urllib3 | pro | 1.22-1 | vulnerable |
| Ubuntu | python-urllib3 | pro | 1.22-1ubuntu0.18.04.1 | vulnerable |
| Ubuntu | python-urllib3 | pro | 1.22-1ubuntu0.18.04.2 | vulnerable |
| Ubuntu | python-urllib3 | pro | 1.22-1ubuntu0.18.04.2+esm1 | fixed |
| Ubuntu | python-urllib3 | 20.04 | 1.24.1-1ubuntu1 | vulnerable |
| Ubuntu | python-urllib3 | 20.04 | 1.24.1-1ubuntu2 | vulnerable |
| Ubuntu | python-urllib3 | 20.04 | 1.25.8-1 | vulnerable |
| Ubuntu | python-urllib3 | 20.04 | 1.25.8-2 | vulnerable |
| Ubuntu | python-urllib3 | 20.04 | 1.25.8-2ubuntu0.1 | vulnerable |
| Ubuntu | python-urllib3 | 20.04 | 1.25.8-2ubuntu0.2 | vulnerable |
| Ubuntu | python-urllib3 | 20.04 | 1.25.8-2ubuntu0.3 | fixed |
| Ubuntu | python-urllib3 | 22.04 | 1.26.5-1~exp1 | vulnerable |
| Ubuntu | python-urllib3 | 22.04 | 1.26.5-1~exp1ubuntu0.1 | fixed |
| Ubuntu | python-pip | pro | 9.0.1-2 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.1 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.2 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.3 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.4 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.5 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.5+esm2 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.5+esm3 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.6 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.6+esm1 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.7 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.7+esm1 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.8 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.8+esm1 | vulnerable |
| Ubuntu | python-pip | pro | 9.0.1-2.3~ubuntu1.18.04.8+esm2 | fixed |
| Ubuntu | python-urllib3 | pro | 1.21.1-1 | vulnerable |
| Ubuntu | python-urllib3 | pro | 1.22-1 | vulnerable |
| Ubuntu | python-urllib3 | pro | 1.22-1ubuntu0.18.04.1 | vulnerable |
| Ubuntu | python-urllib3 | pro | 1.22-1ubuntu0.18.04.2 | vulnerable |
| Ubuntu | python-urllib3 | pro | 1.22-1ubuntu0.18.04.2+esm1 | fixed |
| Suse | python-urllib3 | openstack cloud 9 | 1.23-3.25.1 | fixed |
| Suse | python-urllib3 | openstack cloud crowbar 9 | 1.23-3.25.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | python-urllib3 | source | sid | 1.25.6-4 | not yet assigned | Not reported | Not reported |
| Debian | python-urllib3 | source | forky | 1.25.6-4 | not yet assigned | Not reported | Not reported |
| Debian | python-urllib3 | source | trixie | 1.25.6-4 | not yet assigned | Not reported | Not reported |
| Debian | python-urllib3 | source | bookworm | 1.25.6-4 | not yet assigned | Not reported | Not reported |
| Ubuntu | python-pip | deb | pro | 9.0.1-2.3~ubuntu1.18.04.8+esm2 | Not reported | USN-6473-2 | Not reported |
| Ubuntu | python-pip | deb | 20.04 | 20.0.2-5ubuntu1.10 | Not reported | USN-6473-2 | Not reported |
| Ubuntu | python-pip | deb | 22.04 | 22.0.2+dfsg-1ubuntu0.4 | Not reported | USN-6473-2 | Not reported |
| Ubuntu | python-urllib3 | deb | pro | 1.22-1ubuntu0.18.04.2+esm1 | Not reported | USN-6473-1 | Not reported |
| Ubuntu | python-urllib3 | deb | 20.04 | 1.25.8-2ubuntu0.3 | Not reported | USN-6473-1 | Not reported |
| Ubuntu | python-urllib3 | deb | 22.04 | 1.26.5-1~exp1ubuntu0.1 | Not reported | USN-6473-1 | Not reported |
| Ubuntu | python-pip | deb | pro | 9.0.1-2.3~ubuntu1.18.04.8+esm2 | Not reported | UBUNTU-CVE-2018-25091 | Not reported |
| Ubuntu | python-urllib3 | deb | pro | 1.22-1ubuntu0.18.04.2+esm1 | Not reported | UBUNTU-CVE-2018-25091 | Not reported |
| Suse | python-urllib3 | rpm | openstack cloud 9 | 1.23-3.25.1 | Not reported | SUSE-SU-2023:4352-1 | Not reported |
| Suse | python-urllib3 | rpm | openstack cloud crowbar 9 | 1.23-3.25.1 | Not reported | SUSE-SU-2023:4352-1 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [python3-urllib3]Unknown
Source package: [python-urllib3]
Details (4)
1.26.12-1+deb12u4· all · bookwormFixed · Fixed:
1.25.6-4dsa · python-urllib3 · debian · bookworm; dsa · python-urllib3 · debian · 12
1.26.12-1+deb12u4· all · bookwormFixed · Fixed:
1.25.6-4dsa · python-urllib3 · debian · bookworm; dsa · python-urllib3 · debian · 12
1.26.12-1+deb12u4· all · bookworm-securityFixed · Fixed:
1.25.6-4dsa · python-urllib3 · debian · bookworm; dsa · python-urllib3 · debian · 12
1.26.12-1+deb12u4· all · bookworm-securityFixed · Fixed:
1.25.6-4dsa · python-urllib3 · debian · bookworm; dsa · python-urllib3 · debian · 12
[Debian 13 (Trixie)]
- [python3-urllib3]Unknown
Source package: [python-urllib3]
Details (4)
2.3.0-3+deb13u2· all · trixieFixed · Fixed:
1.25.6-4dsa · python-urllib3 · debian · 13
2.3.0-3+deb13u2· all · trixieFixed · Fixed:
1.25.6-4dsa · python-urllib3 · debian · 13
2.3.0-3+deb13u2· all · trixie-securityFixed · Fixed:
1.25.6-4dsa · python-urllib3 · debian · 13
2.3.0-3+deb13u2· all · trixie-securityFixed · Fixed:
1.25.6-4dsa · python-urllib3 · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2023_4352-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2018-25091]
- [https://osv.dev/vulnerability/DLA-3610-1]
- [https://osv.dev/vulnerability/SUSE-SU-2023:4352-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2018-25091]
- [https://osv.dev/vulnerability/USN-6473-1]
- [https://osv.dev/vulnerability/USN-6473-2]
- [https://security-tracker.debian.org/tracker/CVE-2018-25091]
- [https://security.access.redhat.com/data/csaf/v2/vex/2018/cve-2018-25091.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]