CVE-2022-45347: Apache ShardingSphere-Proxy: MySQL authentication bypass

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-12-22 · updated 2026-06-17
Weakness: CWE-459

Description

Apache ShardingSphere-Proxy prior to 5.3.0 when using MySQL as database backend didn't cleanup the database session completely after client authentication failed, which allowed an attacker to execute normal commands by constructing a special MySQL client. This vulnerability has been fixed in Apache ShardingSphere 5.3.0.

Affected products

Apache Software Foundation Apache ShardingSphere-Proxy: before 5.3.0 — fixed in 5.3.0

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache ShardingSphere-Proxy 5.3.0. Check the vendor advisory for mitigations.

References

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