Under certain configurations of --tlsCAFile and tls.CAFile, MongoDB Server may skip peer certificate validation which may result in untrusted connections to succeed. This may effectively reduce the security guarantees provided by TLS and open connections that should have been closed due to failing certificate validation. This issue affects MongoDB Server v7.0 versions prior to and including 7.0.5, MongoDB Server v6.0 versions prior to and including 6.0.13, MongoDB Server v5.0 versions prior to and including 5.0.24 and MongoDB Server v4.4 versions prior to and including 4.4.28.

Required Configuration : A server process will allow incoming connections to skip peer certificate validation if the server process was started with TLS enabled (net.tls.mode set to allowTLS, preferTLS, or requireTLS) and without a net.tls.CAFile configured.

Incorrect validation of files loaded from a local untrusted directory may allow local privilege escalation if the underlying operating systems is Windows. This may result in the application executing arbitrary behaviour determined by the contents of untrusted files. This issue affects MongoDB Server v5.0 versions prior to 5.0.27, MongoDB Server v6.0 versions prior to 6.0.16, MongoDB Server v7.0 versions prior to 7.0.12, MongoDB Server v7.3 versions prior 7.3.3, MongoDB C Driver versions prior to 1.26.2 and MongoDB PHP Driver versions prior to 1.18.1.

Required Configuration:

Only environments with Windows as the underlying operating system is affected by this issue

prepareUnique index may cause secondaries to crash due to incorrect enforcement of index constraints on secondaries, where in extreme cases may cause multiple secondaries crashing leading to no primaries. This issue affects MongoDB Server v6.0 versions prior to 6.0.17, MongoDB Server v7.0 versions prior to 7.0.13 and MongoDB Server v7.3 versions prior to 7.3.4

"Hot" backup files may be downloaded by underprivileged users, if they are capable of acquiring a unique backup identifier. This issue affects MongoDB Enterprise Server v6.0 versions prior to 6.0.16, MongoDB Enterprise Server v7.0 versions prior to 7.0.11 and MongoDB Enterprise Server v7.3 versions prior to 7.3.3

A bug in query analysis of certain complex self-referential $lookup subpipelines may result in literal values in expressions for encrypted fields to be sent to the server as plaintext instead of ciphertext. Should this occur, no documents would be returned or written. This issue affects mongocryptd binary (v5.0 versions prior to 5.0.29, v6.0 versions prior to 6.0.17, v7.0 versions prior to 7.0.12 and v7.3 versions prior to 7.3.4) and mongocryptv1.so shared libraries (v6.0 versions prior to 6.0.17, v7.0 versions prior to 7.0.12 and v7.3 versions prior to 7.3.4) released alongside MongoDB Enterprise Server versions.