CVE-2026-18801: Stored Clickhouse SQL Injection Through Customer Usage Attribution

Published Aug 4, 2026

Updated

OpenMeter contains a stored, or second-order, SQL injection vulnerability in the handling of customer usage-attribution values.

An attacker who can create or update a customer can store a malicious value in the usageAttribution.key or usageAttribution.subjectKeys fields. When that customer is subsequently used in a meter or event query, OpenMeter inserts the stored value into a ClickHouse WITH map(...) expression using string concatenation.

OpenMeter versions from v1.0.0-beta.218 through v1.0.0-beta.231 are affected.

Affected Software

1 affected component

OpenMeter>=v1.0.0-beta.218<=v1.0.0-beta.231

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade OpenMeter to a version that resolves this vulnerability.
Fixed in v1.0.0-beta.231
Compensating control
Prevent creation or update of customer usage-attribution values by untrusted users until the SQL injection issue is remediated.

Event History

Aug 4, 2026

CVE Published

via MITRE·02:53 PM

Data Sourced

via MITRE·02:53 PM

DescriptionWeakness

Data Sourced

via NVD·04:16 PM

DescriptionSeverityWeakness

Frequently Asked Questions

What is the severity of CVE-2026-18801?

CVE-2026-18801 has a critical severity rating of 9.3 based on its CVSS score.

How do I fix CVE-2026-18801?

To fix CVE-2026-18801, ensure robust input validation and sanitation on customer usage-attribution fields.

What type of vulnerability is identified in CVE-2026-18801?

CVE-2026-18801 is a stored SQL injection vulnerability affecting the OpenMeter software.

Who is affected by CVE-2026-18801?

Any user or organization utilizing OpenMeter that allows for the creation or updating of customer data is potentially affected by CVE-2026-18801.

What are the potential impacts of CVE-2026-18801?

An attacker exploiting CVE-2026-18801 can execute arbitrary SQL commands, leading to unauthorized data manipulation or leakage.

CVE-2026-18801: Stored Clickhouse SQL Injection Through Customer Usage Attribution

Affected Software

Remediation

Event History

Don't miss critical vulnerabilities

Frequently Asked Questions

What is the severity of CVE-2026-18801?

How do I fix CVE-2026-18801?

What type of vulnerability is identified in CVE-2026-18801?

Who is affected by CVE-2026-18801?

What are the potential impacts of CVE-2026-18801?

Company

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Frequently Asked Questions

What is the severity of CVE-2026-18801?

How do I fix CVE-2026-18801?

What type of vulnerability is identified in CVE-2026-18801?

Who is affected by CVE-2026-18801?

What are the potential impacts of CVE-2026-18801?