CVE-2026-44431
Published: May 22, 2026Last modified: June 3, 2026
Description
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.3 |
| Attack Vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | LOW |
| Integrity impact | NONE |
| Availability impact | NONE |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | py3-pip | Fixed (22.3.1-r5) |
| py3-urllib3 | Fixed (1.26.20-r1) | ||
| 25 LTS | py3-pip | Fixed (25.1.1-r2) | |
| py3-urllib3 | Fixed (1.26.20-r3) | ||
| Stream | py3-pip | Fixed (26.1.1-r2) | |
| py3-urllib3 | Fixed (2.7.0-r0) | ||
| Hardened Containers | 23 LTS | py3-pip | Fixed (22.3.1-r5) |
| 25 LTS | py3-pip | Fixed (25.1.1-r2) | |
| Stream | py3-pip | Fixed (26.1.1-r2) |