What’s Vulnerable › Vulnerabilities

CVE-2019-18657

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-10-31 · updated 2026-06-17
• Weakness: CWE-74

Description

ClickHouse before 19.13.5.44 allows HTTP header injection via the url table function.

Affected products

• ClickHouse: before 19.13.5.44 — fixed in 19.13.5.44

How to fix

Upgrade to a fixed version: ClickHouse 19.13.5.44. Check the vendor advisory for mitigations.

References

• https://github.com/ClickHouse/ClickHouse/blob/master/CHANGELOG.md
• https://github.com/ClickHouse/ClickHouse/pull/6466
• https://github.com/ClickHouse/ClickHouse/pull/7526/files
• https://github.com/ClickHouse/ClickHouse/blob/master/CHANGELOG.md
• https://github.com/ClickHouse/ClickHouse/pull/6466
• https://github.com/ClickHouse/ClickHouse/pull/7526/files

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