CVE-2026-18801

Stored Clickhouse SQL Injection Through Customer Usage Attribution

Published Aug 4, 2026 CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Openmeter
Openmeter openmeter
Vendors & Products Openmeter
Openmeter openmeter
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Stored Clickhouse SQL Injection Through Customer Usage Attribution
Weaknesses CWE-20
References
Metrics cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:H/SC:H/SI:L/SA:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Kong
Published
Updated
Aug 4, 2026, 5:45 PM
Reserved
Aug 4, 2026, 11:15 AM
Status
Awaiting Analysis
Published
Aug 4, 2026, 4:16 PM
Modified
Aug 31, 2026, 7:22 PM