Hi all,

Tomorrow we will be issuing a security and maintenance release to all supported branches of MediaWiki.

The new releases will be:

- 1.31.15
- 1.35.3
- 1.36.1

This will resolve 1 minor issue in MediaWiki core and also includes some fixes previously committed to git, including minor security and hardening patches along with bug fixes included for maintenance reasons.

We will make the fixes available in these respective release branches, and also master. Tarballs will be available for the above mentioned point releases as well.

A summary of some of the security fixes that have gone into non-bundled MediaWiki extensions will also follow.

As a reminder, 1.31 (the old LTS) was due to become end of life (EOL) in June 2021. 1.35 (the new LTS) is supported until September 2023. However, to try and meet our LTS-LTS overlap commitments (1.35 was late due to COVID), 1.31 will get best-efforts extra support until the end of September 2021. Practically, this will mean 1.31 is only tested on PHP 7.2, removing the burden of testing on PHP 7.0 and 7.1 which both became EOL in 2019. This will also mean 1.31 is eligible for one final security release in late September 2021 before formally becoming EOL.

[1] https://www.mediawiki.org/wiki/Version_lifecycle