The best password managers are designed to keep the dozens or hundreds of passwords you have safeguarded behind one critical password that you need to remember, so a flaw that gives up that primary password is about as bad as things can get.
That is precisely the situation that users of the popular password manager KeePass are faced with currently, as a security researcher uncovered an exploit that could allow a hacker to obtain a victim's master password in plaintext which would potentially give them access to the victim's entire library of passwords (via TheHackerNews).
