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Percona XtraDB Cluster 8.4.10-10 has been released

Percona XtraDB Cluster 8.4.10-10 has been released on July 27, 2026.

Try it out using the Quickstart guide.

This release is based on Percona Server for MySQL 8.4.10-10.

Percona Server for MySQL 8.4.10-10

Percona Server for MySQL 8.4.10-10 introduces the following new features and improvements:

  • Integrates the new Key Management Interoperability Protocol (KMIP) library into the key management component.

  • Adds JSONL (JSON Lines) output format for Audit Log Filter.

  • Increases the verbosity of the data dictionary upgrade process, making it easier to diagnose issues that occur during upgrade.

  • Logs SQL statements for the Audit Log Filter table_access class and the read and insert subclasses.

  • Flushes the audit log buffer on server shutdown when the ASYNCHRONOUS logging strategy is in use, preventing the loss of buffered events.

  • Reduces memory pressure in the Audit Log Filter component caused by VFS buffering.

  • Aligns the audit_log_filter.format=NEW output between the 8.0 plugin and the 8.4 component.

  • Optimizes performance for mem_root_deque.

Security updates

This release addresses the following security vulnerabilities:

  • CVE-2026-46850: A vulnerability in MySQL Shell (Shell for VS Code) allows a low-privileged attacker with network access via HTTP to compromise MySQL Shell, with potential scope change impact on additional products (CVSS 3.1 Base Score 9.9).

  • CVE-2026-46860: A vulnerability in MySQL Router allows an unauthenticated attacker with network access via HTTP to compromise MySQL Router (CVSS 3.1 Base Score 9.8).

  • CVE-2026-46861: A vulnerability in MySQL NDB Cluster (NDB Operator) allows a low-privileged attacker with network access via HTTP to access or modify critical data, with potential scope change impact (CVSS 3.1 Base Score 9.6).

  • CVE-2026-46862: A vulnerability in MySQL Router allows an unauthenticated attacker with network access via TLS to cause a hang or repeatable unexpected exit of MySQL Router (CVSS 3.1 Base Score 7.5).

  • CVE-2026-46863: A vulnerability in MySQL Server connection handling allows an unauthenticated attacker with network access via multiple protocols to cause a hang or repeatable unexpected exit of the server (CVSS 3.1 Base Score 7.5).

  • CVE-2026-46869: A vulnerability in MySQL Shell (Dump and Load) allows an unauthenticated attacker with network access to access critical data when user interaction is required (CVSS 3.1 Base Score 6.5).

  • CVE-2026-46870: A vulnerability in MySQL Shell (Shell for VS Code) allows a low-privileged attacker with network access to compromise MySQL Shell, with potential scope change impact (CVSS 3.1 Base Score 8.5).

  • CVE-2026-46871: A vulnerability in MySQL Shell (Shell for VS Code) allows a low-privileged attacker with network access via multiple protocols to access critical data (CVSS 3.1 Base Score 6.5).

  • CVE-2026-48165: A vulnerability in the handling of the wsrep_sst_donor and wsrep_sst_receive_address system variables allowed a high-privileged user to execute arbitrary shell commands with the privileges of the mariadbd process during State Snapshot Transfer (SST) due to improper input sanitization (CVSS 3.1 Base Score 7.2). :contentReference[oaicite:0]{index=0}. (This fix was backported from MariaDB. Thanks to the MariaDB project for identifying and fixing this issue.)

  • CVE-2026-49261: A vulnerability in MariaDB Server with wsrep_notify_cmd enabled allowed a remote attacker to execute arbitrary shell commands by embedding commands in the name of a joiner node due to improper input sanitization (CVSS 3.1 Base Score 10.0). :contentReference[oaicite:0]{index=0}. (This fix was backported from MariaDB. Thanks to the MariaDB project for identifying and fixing this issue.)

MySQL 8.4.10

Improvements and bug fixes provided by Oracle for MySQL 8.4.10 and included in Percona Server for MySQL are the following:

  • Connection attribute parsing could read a length-encoded size field before verifying that the complete field was present in the packet, leading to an out-of-bounds read. A size check is now performed before reading the field. (Bug #39116965)

  • A regression in row size estimation for ROW_FORMAT=COMPRESSED tables could cause CREATE TABLE to fail with Row size too large for tables that were accepted in earlier releases. (Bug #39129182, Bug #120323)

Learn more in Percona XtraDB Cluster 8.4.10-10 release notes.

Builds and packaging

  • Percona XtraDB Cluster 8.4.10-10 adds support for Ubuntu 26.04.

  • Percona Server for MySQL releases include a mixture of PGO and non-PGO builds. Where Profile-Guided Optimization (PGO) is enabled, the compiler uses runtime profiling data from representative workloads to guide optimization, which can improve throughput and reduce latency compared with non-PGO builds.

  • See Profile-Guided Optimization (PGO) and non-PGO builds for benefits, considerations, and which build you receive for your platform.