Pokémon Home and Champions displayed maintenance messages amid PHP security concerns on October 21
Dexerto reports an Umamusume notice cited a PHP vulnerability; Nintendo had not linked reported Pokémon maintenance to it.
TLDR
On Oct. 21, 2026, Kotaku's John Walker encountered maintenance messages in Pokémon Home and Champions; Dexerto also reported a Pokémon Sleep maintenance announcement. Dexerto reported that an Umamusume: Pretty Derby notice tied its maintenance to a PHP vulnerability in its servers. The outlet said the flaws could allow remote commands on vulnerable servers, but Nintendo had not confirmed a connection to the reported Pokémon maintenance.
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