CVE-2023-40014

OpenZeppelin Contracts is a library for secure smart contract development.
Starting in version 4.0.0 and prior to version 4.9.3, contracts using
ERC2771Context along with a custom trusted forwarder may see _msgSender
return address(0) in calls that originate from the forwarder with
calldata shorter than 20 bytes. This combination of circumstances does not
appear to be common, in particular it is not the case for
MinimalForwarder from OpenZeppelin Contracts, or any deployed forwarder
the team is aware of, given that the signer address is appended to all
calls that originate from these forwarders. The problem has been patched in
v4.9.3.