The mod_wsgi module before 3.5 for Apache, when daemon mode is enabled, does not properly handle error codes returned by setuid when run on certain Linux kernels, which allows local users to gain privileges via vectors related to the number of running processes.

mod_wsgi module before 3.4 for Apache, when used in embedded mode, might allow remote attackers to obtain sensitive information via the Content-Type header which is generated from memory that may have been freed and then overwritten by a separate thread.

mod_wsgi before 4.2.4 for Apache, when creating a daemon process group, does not properly handle when group privileges cannot be dropped, which might allow attackers to gain privileges via unspecified vectors.