Team PHP announced last Sunday, attackers were able to access the server or main Git uploading two commit malicious (claiming to remedy a "typo" in the source code), including a backdoor. These commissions were immediately observed and canceled and thus never reached the end users.
In response to the hack, the PHP team moves their servers to GitHub, making them canonical.
The investigation into the main cause and the exact purpose of the compromise is still ongoing, so launches will be suspended for two weeks, assuming no other problems are discovered. Here is the announcement:
Hi everyone, Yesterday (2021-03-28) two malicious commits were pushed to the php-src repo [1] from the names of Rasmus Lerdorf and myself. We don't know how yet exactly this happened, but everything points towards a compromise of the git.php.net server (rather than a compromise of an individual git account). While investigation is still underway, we have decided that maintaining our own git infrastructure is an unnecessary security risk, and that we will discontinue the git.php.net server. Instead, the repositories on GitHub, which were previously only mirrors, will become canonical. This means that changes should be pushed directly to GitHub rather than to git.php.net. While previously write access to repositories was handled through our home-grown karma system, you will now need to be part of the php organization on GitHub. If you are not part of the organization yet, or don't have access to a repository you should have access to, contact me at nikic@php.net with your php.net and GitHub account names, as well as the permissions you're currently missing. Membership in the organization requires 2FA to be enabled. This change also means that it is now possible to merge pull requests directly from the GitHub web interface. We're reviewing the repositories for any corruption beyond the two referenced commits. Please contact security@php.net if you notice anything. Regards, Nikita [1]: https://github.com/php/php-src/commit/c730aa26bd52829a49f2ad284b181b7e82a68d7d and https://github.com/php/php-src/commit/2b0f239b211c7544ebc7a4cd2c977a5b7a11ed8a