CVE-2026-18801Public exploitNetwork attack vector

Cross-tenant SQL execution via unescaped attribution keys

Published Aug 4, 2026 · Updated Aug 4, 2026

Stored SQL injection in OpenMeter 1.0.0-beta.218 through 1.0.0-beta.231 allows remote attackers to execute ClickHouse SQL. queryhelper.go quotes customer usageAttribution.key and subjectKeys values after sqlbuilder.Escape(), which leaves single quotes unchanged. Customer creation or update access is required; the open-source default has no authentication, while multi-tenant deployments require tenant credentials, enabling cross-tenant data reads, query-result corruption, and service interruption.

CVSS severity9.3
Critical
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored SQL injection in OpenMeter 1.0.0-beta.218 through 1.0.0-beta.231 allows remote attackers to execute ClickHouse SQL. queryhelper.go quotes customer usageAttribution.key and subjectKeys values after sqlbuilder.Escape(), which leaves single quotes unchanged. Customer creation or update access is required; the open-source default has no authentication, while multi-tenant deployments require tenant credentials, enabling cross-tenant data reads, query-result corruption, and service interruption.

The record

CVE
CVE-2026-18801
Published
Aug 4, 2026
Updated
Aug 4, 2026
Vendor
OpenMeter
Product
OpenMeter
Classifications
CWE-20, CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=v1.0.0-beta.218 <=v1.0.0-beta.231

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenMeter · OpenMeterversion=v1.0.0-beta.218 <=v1.0.0-beta.231

Published CVSS scores

9.9OpenMeter GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
9.3Kong CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:H/SC:H/SI:L/SA:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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