It was discovered that PHP’s implementation of SOAP HTTP Digest
authentication performed insufficient error validation, which may result
in a stack information leak or use of weak randomness.

For the oldstable distribution (bullseye), this problem has been fixed
in version 7.4.33-1+deb11u4.

We recommend that you upgrade your php7.4 packages.

For the detailed security status of php7.4 please refer to
its security tracker page at:
[
https://security-tracker.debian.org/tracker/php7.4](https://security-tracker.debian.org/tracker/php7.4)Read More