Apache ShardingSphere-Proxy: MySQL authentication bypass

published 2022-12-22 3 y ago modified 2026-06-17 4 mo ago also GHSA-wmxm-6wxc-3xqf , EUVD-2022-7763

cvss: 9.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.5%; EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits: 0; none known

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.

Patch / fix

fixed in 2

maven org.apache.shardingsphere:shardingsphere-proxy 5.3.0
Apache Software Foundation Apache ShardingSphere-Proxy 5.3.0

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: total
Assessed: 18 mo ago (2025-04-15)

Exploit prediction

1.48% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
maven	org.apache.shardingsphere:shardingsphere-proxy	<5.3.0	5.3.0

Affected products

Apache Software Foundation Apache ShardingSphere-Proxy

Classification

Weakness

CWE-459 Incomplete Cleanup

References

lists.apache.org /thread/l5rz7j4rg10o7ywtgknh2f5hxnv6yw3l
vendor-advisory, web, mailing-list
nvd.nist.gov /vuln/detail/CVE-2022-45347
advisory
github.com /pjfanning/shardingsphere
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary