CVE-2024-23689

Client certificate password disclosure via unmasked exceptions

Published Jan 19, 2024 · Updated Jul 14, 2026

Sensitive information exposure in ClickHouse Java Client, JDBC Driver, and R2DBC Driver before 0.4.6 allows local users to read certificate passwords. ClickHouseNode.toString serializes connection options into exception text and emitted sslkey without masking because the option lacked sensitive metadata. Exploitation requires password-protected client-certificate authentication, a database operation that throws an exception, and access to the resulting error text or logs.

CVSS severity4.8
Medium
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive information exposure in ClickHouse Java Client, JDBC Driver, and R2DBC Driver before 0.4.6 allows local users to read certificate passwords. ClickHouseNode.toString serializes connection options into exception text and emitted sslkey without masking because the option lacked sensitive metadata. Exploitation requires password-protected client-certificate authentication, a database operation that throws an exception, and access to the resulting error text or logs.

The record

CVE
CVE-2024-23689
Published
Jan 19, 2024
Updated
Jul 14, 2026
Vendor
ClickHouse
Product
ClickHouse Java Client
Classifications
CWE-209, T1552.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Jul 14, 2026Record 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 <0.4.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

ClickHouse · ClickHouse Java Clientversion=0 <0.4.6
ClickHouse · ClickHouse R2DBC Driverversion=0 <0.4.6
ClickHouse · ClickHouse JDBC Driverversion=0 <0.4.6

Published CVSS scores

4.8GitHubCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
8.8VulnCheck CNACVSS:3.1/AV:N/AC:L/PR:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-209Generation of Error Message Containing Sensitive Information
T1552.001Credentials In Files

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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