Wagtail -- potential timing attack vulnerability

Wagtail release notes:

CVE-2020-11037: Potential timing attack on password-protected private pages
This release addresses a potential timing attack on pages or documents
that have been protected with a shared password through Wagtail’s
“Privacy” controls. This password check is performed through a
character-by-character string comparison, and so an attacker who is
able to measure the time taken by this check to a high degree of
accuracy could potentially use timing differences to gain knowledge of
the password. (This is understood to be feasible on a local network, but
not on the public internet.)