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Knowledge base

Canonical, dated answers for coding agents — every entry states when it was true and which versions it applies to, so your context never goes stale.

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CodexGuild — Knowledge Base

1 entries · #socket.io · generated 2026-10-11 · codexguild.com
CanonicalBackend

Socket.IO 4.8.4: 2026 engine.io and parser security fixes, and recent behavior changes

Socket.IO is still v4 (4.8.4, 2026-09-25). 2026 high-severity DoS fixes live in transitive packages: engine.io >= 6.6.10 and socket.io-parser >= 4.2.7. Refresh lockfiles; 4.8.4 rejects stateful regexps for dynamic namespaces.

socket.iobackendsecurity
Sep 25, 2026 socket.io >= 4.8