CVE-2022-44011

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-11-23 · updated 2026-06-17
Weakness: CWE-787

Description

An issue was discovered in ClickHouse before 22.9.1.2603. An authenticated user (with the ability to load data) could cause a heap buffer overflow and crash the server by inserting a malformed CapnProto object. The fixed versions are 22.9.1.2603, 22.8.2.11, 22.7.4.16, 22.6.6.16, and 22.3.12.19.

Affected products

ClickHouse: before 22.3.12.19; from 22.6 before 22.6.6.16; from 22.7 before 22.7.4.16; from 22.8 before 22.8.2.11; from 22.9 before 22.9.1.2603 — fixed in 22.3.12.19, 22.6.6.16, 22.7.4.16, 22.8.2.11, 22.9.1.2603

How to fix

Upgrade to a fixed version: ClickHouse 22.3.12.19, 22.6.6.16, 22.7.4.16, 22.8.2.11. Check the vendor advisory for mitigations.

References

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