Ubuntu Security Notice 1066-1 - It was discovered that Django did not properly validate HTTP requests that contain an X-Requested-With header. An attacker could exploit this vulnerability to perform cross-site request forgery (CSRF) attacks. It was discovered that Django did not properly sanitize its input when performing file uploads, resulting in cross-site scripting (XSS) vulnerabilities. With cross-site scripting vulnerabilities, if a user were tricked into viewing server output during a crafted server request, a remote attacker could exploit this to modify the contents, or steal confidential data, within the same domain.