CVE-2026-44431EPSS p25.8%
CVE-2026-44431CVE-2026-44431
python / urllib3
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.
Scoring
| CVSS | 5.3 () |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| EPSS | 0.33% probability of exploitation · percentile 25.8% · 2026-08-11T12:00:17Z |
| Last modified | 2026-06-26 |