CVE catalog
CVE-2026-44431
urllib3 is an HTTP client library for Python. From 1.23 to before 2.7.0, cross-origin redirects followed from the low-level API via ProxyManager.connection_from_url().urlopen(..., assert_same_host=Fal
- Severity
- High · CVSS 8.2
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.33% · Oct 25, 2026
urllib3 is an HTTP client library for Python. From 1.23 to before 2.7.0, cross-origin redirects followed from the low-level API via ProxyManager.connection_from_url().urlopen(..., assert_same_host=False) still forward these sensitive headers. This vulnerability is fixed in 2.7.0.
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 |
| Cpe | python-urllib3 | Not reported | 2.0.7-1ubuntu0.7 | fixed |
| Cpe | python3-urllib3 | Not reported | 2.0.7-1ubuntu0.7 | fixed |
| Cpe | urllib3 | Not reported | 2.7.0 | fixed |
| PyPI | urllib3 | Not reported | 2.7.0 | fixed |
| Ubuntu | python-urllib3 | pro | 1.24.1-1ubuntu1 | vulnerable |
| Ubuntu | python-urllib3 | pro | 1.24.1-1ubuntu2 | vulnerable |
| Ubuntu | python-urllib3 | pro | 1.25.8-1 | vulnerable |
| Ubuntu | python-urllib3 | pro | 1.25.8-2 | vulnerable |
| Ubuntu | python-urllib3 | pro | 1.25.8-2ubuntu0.1 | vulnerable |
| Ubuntu | python-urllib3 | pro | 1.25.8-2ubuntu0.2 | vulnerable |
| Ubuntu | python-urllib3 | pro | 1.25.8-2ubuntu0.3 | vulnerable |
| Ubuntu | python-urllib3 | pro | 1.25.8-2ubuntu0.4 | vulnerable |
| Ubuntu | python-urllib3 | pro | 1.25.8-2ubuntu0.4+esm1 | vulnerable |
| Ubuntu | python-urllib3 | pro | 1.25.8-2ubuntu0.4+esm2 | vulnerable |
| Ubuntu | python-urllib3 | pro | 1.25.8-2ubuntu0.4+esm3 | vulnerable |
| Ubuntu | python-urllib3 | pro | 1.25.8-2ubuntu0.4+esm4 | vulnerable |
| Ubuntu | python-urllib3 | pro | 1.25.8-2ubuntu0.4+esm5 | fixed |
| Ubuntu | python-urllib3 | 22.04 | 1.26.5-1~exp1 | vulnerable |
| Ubuntu | python-urllib3 | 22.04 | 1.26.5-1~exp1ubuntu0.1 | vulnerable |
| Ubuntu | python-urllib3 | 22.04 | 1.26.5-1~exp1ubuntu0.2 | vulnerable |
| Ubuntu | python-urllib3 | 22.04 | 1.26.5-1~exp1ubuntu0.3 | vulnerable |
| Ubuntu | python-urllib3 | 22.04 | 1.26.5-1~exp1ubuntu0.4 | vulnerable |
| Ubuntu | python-urllib3 | 22.04 | 1.26.5-1~exp1ubuntu0.5 | vulnerable |
| Ubuntu | python-urllib3 | 22.04 | 1.26.5-1~exp1ubuntu0.6 | vulnerable |
| Ubuntu | python-urllib3 | 22.04 | 1.26.5-1~exp1ubuntu0.7 | fixed |
| Ubuntu | python-urllib3 | 24.04 | 1.26.16-1 | vulnerable |
| Ubuntu | python-urllib3 | 24.04 | 1.26.18-1 | vulnerable |
| Ubuntu | python-urllib3 | 24.04 | 2.0.7-1 | vulnerable |
| Ubuntu | python-urllib3 | 24.04 | 2.0.7-1ubuntu0.1 | vulnerable |
| Ubuntu | python-urllib3 | 24.04 | 2.0.7-1ubuntu0.2 | vulnerable |
| Ubuntu | python-urllib3 | 24.04 | 2.0.7-1ubuntu0.3 | vulnerable |
| Ubuntu | python-urllib3 | 24.04 | 2.0.7-1ubuntu0.4 | vulnerable |
| Ubuntu | python-urllib3 | 24.04 | 2.0.7-1ubuntu0.5 | vulnerable |
| Ubuntu | python-urllib3 | 24.04 | 2.0.7-1ubuntu0.6 | vulnerable |
| Ubuntu | python-urllib3 | 24.04 | 2.0.7-1ubuntu0.7 | fixed |
| Ubuntu | python-urllib3 | 25.10 | 2.3.0-2 | vulnerable |
| Ubuntu | python-urllib3 | 25.10 | 2.3.0-2ubuntu1 | vulnerable |
| Ubuntu | python-urllib3 | 25.10 | 2.3.0-3 | vulnerable |
| Ubuntu | python-urllib3 | 25.10 | 2.3.0-3ubuntu0.1 | vulnerable |
| Ubuntu | python-urllib3 | 25.10 | 2.3.0-3ubuntu0.2 | vulnerable |
| Ubuntu | python-urllib3 | 25.10 | 2.3.0-3ubuntu0.3 | vulnerable |
| Ubuntu | python-urllib3 | 25.10 | 2.3.0-3ubuntu0.4 | vulnerable |
| Ubuntu | python-urllib3 | 25.10 | 2.3.0-3ubuntu0.6 | fixed |
| Ubuntu | python-urllib3 | 26.04 | 2.3.0-3 | vulnerable |
| Ubuntu | python-urllib3 | 26.04 | 2.5.0-1 | vulnerable |
| Ubuntu | python-urllib3 | 26.04 | 2.5.0-1ubuntu1 | vulnerable |
| Ubuntu | python-urllib3 | 26.04 | 2.5.0-1ubuntu2 | vulnerable |
| Ubuntu | python-urllib3 | 26.04 | 2.6.3-1ubuntu1 | vulnerable |
| Ubuntu | python-urllib3 | 26.04 | 2.6.3-1ubuntu1.1 | fixed |
| Suse | python-urllib3 | linux enterprise module for public cloud 15 sp4 | 2.0.7-150400.7.30.1 | fixed |
| Suse | python-urllib3 | linux enterprise module for python 3 15 sp7 | 2.0.7-150400.7.30.1 | fixed |
| Suse | python-urllib3 | linux enterprise high performance computing 15 sp4-espos | 2.0.7-150400.7.30.1 | fixed |
| Suse | python-urllib3 | linux enterprise high performance computing 15 sp4-ltss | 2.0.7-150400.7.30.1 | fixed |
| Suse | python-urllib3 | linux enterprise high performance computing 15 sp5-espos | 2.0.7-150400.7.30.1 | fixed |
| Suse | python-urllib3 | linux enterprise high performance computing 15 sp5-ltss | 2.0.7-150400.7.30.1 | fixed |
| Suse | python-urllib3 | linux enterprise server 15 sp4-ltss | 2.0.7-150400.7.30.1 | fixed |
| Suse | python-urllib3 | linux enterprise server 15 sp5-ltss | 2.0.7-150400.7.30.1 | fixed |
| Suse | python-urllib3 | linux enterprise server 15 sp6-ltss | 2.0.7-150400.7.30.1 | fixed |
| Suse | python-urllib3 | linux enterprise server for sap applications 15 sp4 | 2.0.7-150400.7.30.1 | fixed |
| Suse | python-urllib3 | linux enterprise server for sap applications 15 sp5 | 2.0.7-150400.7.30.1 | fixed |
| Suse | python-urllib3 | linux enterprise server for sap applications 15 sp6 | 2.0.7-150400.7.30.1 | fixed |
| Suse | python-urllib3_1 | linux enterprise server 16.0 | 1.26.20-160000.4.1 | fixed |
| Suse | python-urllib3_1 | linux enterprise server for sap applications 16.0 | 1.26.20-160000.4.1 | fixed |
| Suse | python-urllib3 | linux enterprise server 16.0 | 2.5.0-160000.6.1 | fixed |
| Suse | python-urllib3 | linux enterprise server for sap applications 16.0 | 2.5.0-160000.6.1 | fixed |
| Opensuse | python-urllib3_1 | tumbleweed | 1.26.20-6.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | python-urllib3 | source | sid | 2.7.0-1 | not yet assigned | Not reported | [1136653] |
| Debian | python-urllib3 | source | forky | 2.7.0-1 | not yet assigned | Not reported | [1136653] |
| Debian | python-urllib3 | source | trixie | 2.3.0-3+deb13u2 | not yet assigned | Not reported | [1136653] |
| Debian | python-urllib3 | source | bookworm | 1.26.12-1+deb12u4 | not yet assigned | Not reported | [1136653] |
| Cpe | python-urllib3 | cpe | Not reported | 2.0.7-1ubuntu0.7 | Not reported | Not reported | Not reported |
| Cpe | python3-urllib3 | cpe | Not reported | 2.0.7-1ubuntu0.7 | Not reported | Not reported | Not reported |
| Cpe | urllib3 | cpe | Not reported | 2.7.0 | Not reported | Not reported | Not reported |
| PyPI | urllib3 | PyPI | Not reported | 2.7.0 | Not reported | GHSA-QCCP-GFCP-XXVC | Not reported |
| Ubuntu | python-urllib3 | deb | pro | 1.25.8-2ubuntu0.4+esm5 | Not reported | USN-8811-1 | Not reported |
| Ubuntu | python-urllib3 | deb | 22.04 | 1.26.5-1~exp1ubuntu0.7 | Not reported | USN-8379-1 | Not reported |
| Ubuntu | python-urllib3 | deb | 24.04 | 2.0.7-1ubuntu0.7 | Not reported | USN-8379-1 | Not reported |
| Ubuntu | python-urllib3 | deb | 25.10 | 2.3.0-3ubuntu0.6 | Not reported | USN-8379-1 | Not reported |
| Ubuntu | python-urllib3 | deb | 26.04 | 2.6.3-1ubuntu1.1 | Not reported | USN-8379-1 | Not reported |
| Suse | python-urllib3 | rpm | linux enterprise module for public cloud 15 sp4 | 2.0.7-150400.7.30.1 | Not reported | SUSE-SU-2026:2486-1 | Not reported |
| Suse | python-urllib3 | rpm | linux enterprise module for python 3 15 sp7 | 2.0.7-150400.7.30.1 | Not reported | SUSE-SU-2026:2486-1 | Not reported |
| Suse | python-urllib3 | rpm | linux enterprise high performance computing 15 sp4-espos | 2.0.7-150400.7.30.1 | Not reported | SUSE-SU-2026:2486-1 | Not reported |
| Suse | python-urllib3 | rpm | linux enterprise high performance computing 15 sp4-ltss | 2.0.7-150400.7.30.1 | Not reported | SUSE-SU-2026:2486-1 | Not reported |
| Suse | python-urllib3 | rpm | linux enterprise high performance computing 15 sp5-espos | 2.0.7-150400.7.30.1 | Not reported | SUSE-SU-2026:2486-1 | Not reported |
| Suse | python-urllib3 | rpm | linux enterprise high performance computing 15 sp5-ltss | 2.0.7-150400.7.30.1 | Not reported | SUSE-SU-2026:2486-1 | Not reported |
| Suse | python-urllib3 | rpm | linux enterprise server 15 sp4-ltss | 2.0.7-150400.7.30.1 | Not reported | SUSE-SU-2026:2486-1 | Not reported |
| Suse | python-urllib3 | rpm | linux enterprise server 15 sp5-ltss | 2.0.7-150400.7.30.1 | Not reported | SUSE-SU-2026:2486-1 | Not reported |
| Suse | python-urllib3 | rpm | linux enterprise server 15 sp6-ltss | 2.0.7-150400.7.30.1 | Not reported | SUSE-SU-2026:2486-1 | Not reported |
| Suse | python-urllib3 | rpm | linux enterprise server for sap applications 15 sp4 | 2.0.7-150400.7.30.1 | Not reported | SUSE-SU-2026:2486-1 | Not reported |
| Suse | python-urllib3 | rpm | linux enterprise server for sap applications 15 sp5 | 2.0.7-150400.7.30.1 | Not reported | SUSE-SU-2026:2486-1 | Not reported |
| Suse | python-urllib3 | rpm | linux enterprise server for sap applications 15 sp6 | 2.0.7-150400.7.30.1 | Not reported | SUSE-SU-2026:2486-1 | Not reported |
| Suse | python-urllib3_1 | rpm | linux enterprise server 16.0 | 1.26.20-160000.4.1 | Not reported | SUSE-SU-2026:22011-1 | Not reported |
| Suse | python-urllib3_1 | rpm | linux enterprise server for sap applications 16.0 | 1.26.20-160000.4.1 | Not reported | SUSE-SU-2026:22011-1 | Not reported |
| Suse | python-urllib3 | rpm | linux enterprise server 16.0 | 2.5.0-160000.6.1 | Not reported | SUSE-SU-2026:22003-1 | Not reported |
| Suse | python-urllib3 | rpm | linux enterprise server for sap applications 16.0 | 2.5.0-160000.6.1 | Not reported | SUSE-SU-2026:22003-1 | Not reported |
| Opensuse | python-urllib3_1 | rpm | tumbleweed | 1.26.20-6.1 | Not reported | OPENSUSE-SU-2026:10838-1 | Not reported |
OpenFactory catalog packages
[openSUSE Tumbleweed]
- [python313-urllib3_1]Unknown
Source package: [python-urllib3_1]
Details (1)
1.26.20-7.2· noarch · tumbleweedUnknown · Fixed:
1.26.20-6.1Version impact unknown
nvd · python-urllib3_1 · opensuse · tumbleweed
- [python314-urllib3_1]Unknown
Source package: [python-urllib3_1]
Details (1)
1.26.20-7.2· noarch · tumbleweedUnknown · Fixed:
1.26.20-6.1Version impact unknown
nvd · python-urllib3_1 · opensuse · tumbleweed
[Debian 12 (Bookworm)]
- [python3-urllib3]Fixed
Source package: [python-urllib3]
Details (4)
1.26.12-1+deb12u4· all · bookwormFixed · Fixed:
1.26.12-1+deb12u4nvd · python-urllib3 · debian · bookworm; nvd · python-urllib3 · debian · 12
1.26.12-1+deb12u4· all · bookwormFixed · Fixed:
1.26.12-1+deb12u4nvd · python-urllib3 · debian · bookworm; nvd · python-urllib3 · debian · 12
1.26.12-1+deb12u4· all · bookworm-securityFixed · Fixed:
1.26.12-1+deb12u4nvd · python-urllib3 · debian · bookworm; nvd · python-urllib3 · debian · 12
1.26.12-1+deb12u4· all · bookworm-securityFixed · Fixed:
1.26.12-1+deb12u4nvd · python-urllib3 · debian · bookworm; nvd · python-urllib3 · debian · 12
[Debian 13 (Trixie)]
- [python3-urllib3]Fixed
Source package: [python-urllib3]
Details (4)
2.3.0-3+deb13u2· all · trixieFixed · Fixed:
2.3.0-3+deb13u2nvd · python-urllib3 · debian · 13
2.3.0-3+deb13u2· all · trixieFixed · Fixed:
2.3.0-3+deb13u2nvd · python-urllib3 · debian · 13
2.3.0-3+deb13u2· all · trixie-securityFixed · Fixed:
2.3.0-3+deb13u2nvd · python-urllib3 · debian · 13
2.3.0-3+deb13u2· all · trixie-securityFixed · Fixed:
2.3.0-3+deb13u2nvd · python-urllib3 · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2026_32992.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-44431]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-44431]
- [https://osv.dev/vulnerability/GHSA-qccp-gfcp-xxvc]
- [https://osv.dev/vulnerability/SUSE-SU-2026:22003-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:22011-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:2486-1]
- [https://osv.dev/vulnerability/USN-8379-1]
- [https://osv.dev/vulnerability/USN-8811-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:10838-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-44431]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44431.json]
- [https://ubuntu.com/security/notices/USN-8379-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2455.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]