PYSEC-2026-141

    Dashboard / Vulnerabilities / PYSEC-2026-141

    PYSEC-2026-141

    Published: 13 May 2026Last Modified: 20 May 2026

    Summary:

    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.connection_from_url().urlopen(..., assert_same_host=False) still forward these sensitive headers. This vulnerability is fixed in 2.7.0.

    References: https://github.com/urllib3/urllib3/security/advisories/GHSA-qccp-gfcp-xxvc

    Affected packages

    Package

    Name: urllib3

    Purl: pkg:pypi/urllib3

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 1.23
    Fixed -2.7.0

    Affected versions

    1.23

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    PYSEC-2026-141 | CVE-DB