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      <title>CVE-2026-18801 — Stored Clickhouse SQL Injection Through Customer Usage Attribution</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-18801</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; openmeter&lt;/p&gt;
&lt;p&gt;OpenMeter contains a stored, or second-order, SQL injection vulnerability in the handling of customer usage-attribution values.&lt;/p&gt;
&lt;p&gt;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.&lt;/p&gt;
&lt;p&gt;OpenMeter versions from v1.0.0-beta.218 through v1.0.0-beta.231 are affected.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; openmeter&lt;/p&gt;
&lt;p&gt;OpenMeter contains a stored, or second-order, SQL injection vulnerability in the handling of customer usage-attribution values.&lt;/p&gt;
&lt;p&gt;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.&lt;/p&gt;
&lt;p&gt;OpenMeter versions from v1.0.0-beta.218 through v1.0.0-beta.231 are affected.&lt;/p&gt;</content:encoded>
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