CVE-2011-4138

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    CVE-2011-4138

    Published: 19 Oct 2011Last Modified: 10 Apr 2026

    Summary:

    Details: The verify_exists functionality in the URLField implementation in Django before 1.2.7 and 1.3.x before 1.3.1 originally tests a URL's validity through a HEAD request, but then uses a GET request for the new target URL in the case of a redirect, which might allow remote attackers to trigger arbitrary GET requests with an unintended source IP address via a crafted Location header.

    References: http://secunia.com/advisories/46614, http://www.debian.org/security/2011/dsa-2332, https://www.djangoproject.com/weblog/2011/sep/09/, http://openwall.com/lists/oss-security/2011/09/11/1, http://openwall.com/lists/oss-security/2011/09/13/2, https://bugzilla.redhat.com/show_bug.cgi?id=737366, https://www.djangoproject.com/weblog/2011/sep/09/, https://www.djangoproject.com/weblog/2011/sep/10/127/, https://hermes.opensuse.org/messages/14700881

    Affected packages

    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
    CVE-2011-4138 | CVE-DB