Pokemon, Umamusume Games Offline Due to PHP Vulnerability

Critical PHP security flaw forces major gaming services offline for emergency patches.

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Oct 21, 2026

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Pokemon, Umamusume Games Offline Due to PHP Vulnerability

Critical PHP security flaw forces major gaming services offline for emergency patches.

In brief

Critical PHP security flaw forces major gaming services offline for emergency patches. Nintendo and Cygames services globally halted after discovering critical PHP vulnerabilities that allow remote code execution. Originally reported by Dexerto.

Games Offline

nintendo pokemon servers down php security threat

Pokemon Sleep, Pokemon HOME, Pokemon Champions and major Japanese games taken offline for emergency maintenance.

Outages Started

Outages began on October 21, shortly before PHP security updates for the flaws were released.

Affected Services

Pokemon Sleep, Pokemon HOME, Pokemon Champions, Nintendo Switch 1 and 2 online services, Umamusume, Granblue Fantasy, Shadowverse, Princess Connect Re:Dive and CHUNITHM.

PHP Vulnerability Details

PHP Vulnerability Details

Two critical PHP vulnerabilities rated 9.2 out of 10 allow unauthenticated remote code execution.

Security Impact

Attackers could alter websites, steal information, install malicious software or attack other systems.

Emergency Fixes

Nintendo and Cygames taking services offline to apply patches or prevent potential attacks.

In short

Nintendo and Cygames services globally halted after discovering critical PHP vulnerabilities that allow remote code execution.

Read the original on Dexerto

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