CVE-2011-4138: The verify_exists functionality in the URLField implementation in Django before 1.2.7 and 1.3.x before 1.3....

Security readout for executives and security teams

Older Django URL validation could be tricked into making a GET request to a redirected location. In business terms, an affected web application might be abused as an unintended request source. The sources do not show confirmed active exploitation or a CVSS score. Exposure is most likely in legacy Django applications using URLField verify_exists on untrusted user-submitted URLs. Modern supported Django versions should not be assumed affected from these sources. Treat this as a legacy-stack cleanup item unless affected Django versions are internet-facing or validate untrusted URLs. Prioritize upgrade verification over emergency response because active exploitation is not supported by the provided sources. Mitigation focus: Upgrade affected Django deployments to 1.2.7, 1.3.1, or later supported releases.; Review Debian, openSUSE, Red Hat, and Django advisories for package-specific guidance.; Disable or avoid URLField verify_exists behavior for untrusted input until upgraded..

Prepared

Jun 27, 2026, 17:48 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.