CVE-2022-45347Network attack vector

Unauthenticated database commands via retained failed session

Published Dec 22, 2022 · Updated Apr 15, 2025

Authentication bypass in Apache ShardingSphere-Proxy before 5.3.0 allows remote attackers to execute MySQL commands without valid credentials. MySQLAuthenticationEngine returned a finished authentication result and kept the client channel open after sending an access-denied packet; the fix closes the channel and leaves authentication unfinished. Exposure requires a MySQL-protocol listener and a specially constructed client, after which normal database commands run in the rejected session context.

CVSS severity9.8
Critical
EPSS probability1.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Apache ShardingSphere-Proxy before 5.3.0 allows remote attackers to execute MySQL commands without valid credentials. MySQLAuthenticationEngine returned a finished authentication result and kept the client channel open after sending an access-denied packet; the fix closes the channel and leaves authentication unfinished. Exposure requires a MySQL-protocol listener and a specially constructed client, after which normal database commands run in the rejected session context.

The record

CVE
CVE-2022-45347
Published
Dec 22, 2022
Updated
Apr 15, 2025
Vendor
The Apache Software Foundation
Product
Apache ShardingSphere-Proxy
Classifications
CWE-459, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 22, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <5.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache ShardingSphere-Proxyversion=0 <5.3.0

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-459Incomplete Cleanup
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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