2026-09-24 - production
21:33 <catrope@deploy1003> catrope: Backport for [[gerrit:1344795|Catch newline character in UserMailer to prevent it from allowing bad actors to create an additional header (T434545)]] synced to the testservers (see https://wikitech.wikimedia.org/wiki/Mwdebug). Changes can now be verified there. [production]