How many CVEs does Clickhouse have?

Clickhouse has 27 published CVE records since 2019, including 3 in the last two years.

How many Clickhouse CVEs are in CISA KEV?

None of Clickhouse's CVEs are currently listed in CISA's Known Exploited Vulnerabilities catalog.

Which Clickhouse products have the most CVEs?

The Clickhouse products with the most published CVEs are ClickHouse, clickhouse cloud, clickhouse-java, ClickHouse OSS, com.clickhouse:clickhouse-client.

What are the most common weakness types in Clickhouse CVEs?

Clickhouse's CVEs most often map to these CWE weakness types: CWE-122 (Heap-based Buffer Overflow), CWE-369 (Divide By Zero), CWE-120 (Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')), CWE-125 (Out-of-bounds Read).

Are there public exploits for Clickhouse vulnerabilities?

Yes — 3 of Clickhouse's CVEs have a known public exploit.

How many critical Clickhouse vulnerabilities are there?

Clickhouse has 4 critical and 14 high-severity CVEs.

What is the average severity of Clickhouse CVEs?

The average CVSS base score across Clickhouse's scored CVEs is 7.6.

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27 CVEs

Clickhouse Vulnerabilities

Name: Clickhouse vulnerability dataset (CVEs)
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

CVE security advisories and vulnerability history for Clickhouse.

27

Total CVEs

Published

0

In CISA KEV

Exploited in the wild

3

Public exploits

PoC or exploit code

7.6

Avg CVSS

2019–2025

Overview

Clickhouse has 27 published CVE records since 2019, of which 0 are in CISA's Known Exploited Vulnerabilities catalog and 3 have a known public exploit. The average CVSS base score across scored CVEs is 7.6.

This page aggregates every publicly disclosed vulnerability (CVE) affecting Clickhouse products, with severity breakdowns, the most-affected products, the most common weakness types, and the latest disclosures.

Security scorecard

A quick read on Clickhouse's vulnerability posture, as a share of its 27 published CVEs.

Average CVSS: 7.6
Critical / high: 67%
Actively exploited (KEV): 0%
Public exploit available: 11%
Patch available: 96%

Severity and exploitation

How the CVSS severity of Clickhouse's CVEs breaks down, plus how many are exploited in the wild or have public exploit code.

Critical4

High14

Medium9

Low0

In CISA’s Known Exploited Vulnerabilities catalog

0

None of Clickhouse's CVEs are currently listed in CISA's KEV catalog.

Public exploits

3

3 of Clickhouse's CVEs have a known public exploit available.

Most affected products

The Clickhouse products with the most published CVEs. Follow any product to browse its versions and vulnerabilities.

Common weakness types

The CWE weakness categories most often found in Clickhouse CVEs. Follow any weakness for its full explanation.

CNAs that assign these CVEs

The CVE Numbering Authorities that publish Clickhouse CVE records.

Disclosure activity by year

How many Clickhouse CVEs were published each year.

2019

8

2022

7

2023

5

2024

4

2025

3

Latest Clickhouse CVEs

The most recently disclosed vulnerabilities affecting Clickhouse.

Stack overflow leading to DoS can be triggered by a malicious authenticated client.
CWE-120
High · CVSS 8.2
EPSS 0.9%2025-05-21
Query smuggling in ch-go library
CWE-444
Medium · CVSS 5.9
EPSS 0.4%2025-04-11
Fail input validation in clickhouse-library-bridge API could lead to RCE under specific configuration
CWE-20
High · CVSS 7.5
EPSS 0.5%2025-03-20
High vulnerability · 2024-09-03
CWE-120
High · CVSS 7.5
EPSS 0.6%2024-09-03
High vulnerability · 2024-08-01
CWE-122
High · CVSS 8.1
EPSS 0.7%2024-08-01
Medium vulnerability · 2024-03-18
CWE-863
Medium · CVSS 4.9
EPSS 0.6%2024-03-18
ClickHouse Client Certificate Password Exposure
CWE-209
High · CVSS 8.8
EPSS 0.7%2024-01-19
High vulnerability · 2023-12-22
CWE-120
High · CVSS 7.5
EPSS 0.5%2023-12-22
High vulnerability · 2023-12-21
CWE-191
High · CVSS 7.5
EPSS 0.6%2023-12-21
Critical vulnerability · 2023-12-20
CWE-122
Critical · CVSS 9.8
EPSS 0.5%2023-12-20
Medium vulnerability · 2023-11-23
Medium · CVSS 6.5
EPSS 0.7%2023-11-23
High vulnerability · 2023-11-23
High · CVSS 7.5
EPSS 1.0%2023-11-23

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Frequently asked questions

Common questions about Clickhouse vulnerabilities.

How many CVEs does Clickhouse have?: Clickhouse has 27 published CVE records since 2019, including 3 in the last two years.
How many Clickhouse CVEs are in CISA KEV?: None of Clickhouse's CVEs are currently listed in CISA's Known Exploited Vulnerabilities catalog.
Which Clickhouse products have the most CVEs?: The Clickhouse products with the most published CVEs are ClickHouse, clickhouse cloud, clickhouse-java, ClickHouse OSS, com.clickhouse:clickhouse-client.
What are the most common weakness types in Clickhouse CVEs?: Clickhouse's CVEs most often map to these CWE weakness types: CWE-122 (Heap-based Buffer Overflow), CWE-369 (Divide By Zero), CWE-120 (Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')), CWE-125 (Out-of-bounds Read).
Are there public exploits for Clickhouse vulnerabilities?: Yes — 3 of Clickhouse's CVEs have a known public exploit.
How many critical Clickhouse vulnerabilities are there?: Clickhouse has 4 critical and 14 high-severity CVEs.
What is the average severity of Clickhouse CVEs?: The average CVSS base score across Clickhouse's scored CVEs is 7.6.

References

Vulnerability data is sourced from the CVE Program; severity, KEV, and exploit signals are aggregated by RadicalNotion.AI.

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