PYSEC-2026-141
See a problem?- Import Source
- https://github.com/pypa/advisory-database/blob/main/vulns/urllib3/PYSEC-2026-141.yaml
- JSON Data
- https://api.test.osv.dev/v1/vulns/PYSEC-2026-141
- Aliases
- Published
- 2026-05-13T16:16:57.150Z
- Modified
- 2026-05-20T09:19:20.983812Z
- Severity
-
- 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
- Summary
- [none]
- Details
-
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.connectionfromurl().urlopen(..., assertsamehost=False) still forward these sensitive headers. This vulnerability is fixed in 2.7.0.
- References
Affected packages
PyPI / urllib3
Package
- Name
- urllib3
- View open source insights on deps.dev
- Purl
- pkg:pypi/urllib3
Affected versions
1.*
1.23
1.24
1.24.1
1.24.2
1.24.3
1.25
1.25.1
1.25.2
1.25.3
1.25.4
1.25.5
1.25.6
1.25.7
1.25.8
1.25.9
1.25.10
1.25.11
1.26.0
1.26.1
1.26.2
1.26.3
1.26.4
1.26.5
1.26.6
1.26.7
1.26.8
1.26.9
1.26.10
1.26.11
1.26.12
1.26.13
1.26.14
1.26.15
1.26.16
1.26.17
1.26.18
1.26.19
1.26.20
2.*
2.0.0a1
2.0.0a2
2.0.0a3
2.0.0a4
2.0.0
2.0.1
2.0.2
2.0.3
2.0.4
2.0.5
2.0.6
2.0.7
2.1.0
2.2.0
2.2.1
2.2.2
2.2.3
2.3.0
2.4.0
2.5.0
2.6.0
2.6.1
2.6.2
2.6.3