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Changes in MySQL 8.4.13 (2026-10-20)

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MySQL·Oct 20, 2026, 12:00 AMFixSecurity-relevantAI-assisted summary

Summary

Introduced VERSION_WITH_UPDATE() to expose a four-part release identity (MAJOR.MINOR.PATCH.UPDATE).
Resolved a wide range of bugs across InnoDB, optimizer, replication, audit log, and added security fixes for RSA key handling and WebAuthn parsing.
Upgraded bundled libraries (libevent, TIRPC, OpenTelemetry) and improved package compatibility on EL10 aarch64.

featurebugfixsecurityminorsource healthy

Official source Last checked Oct 20, 2026, 11:00 PM

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AI-assisted summarysource healthyLast checked Oct 20, 2026, 11:00 PM

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