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CVE

CVE-2026-18801

Stored Clickhouse SQL Injection Through Customer Usage Attribution
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CVE

CVE-2026-18801

Stored Clickhouse SQL Injection Through Customer Usage Attribution

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.3
-
4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/openmeterio/openmeter/, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/18xxx/CVE-2026-18801.json, https://github.com/openmeterio/openmeter/security/advisories/GHSA-m2fw-9wxq-jgf5, https://nvd.nist.gov/vuln/detail/CVE-2026-18801

Severity

0

CVSS Score
0
10

Basic Information

Base CVSS
0
EPSS Probability
0.00228%
EPSS Percentile
0.13351%
Introduced Version
88332a1d268929f12c09e3dc3608514a61785373
Fix Available
9d0d3a4d902a156f4591db0f8e09742dacccbda4

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