CVE-2026-18801
Stored SQL injection in OpenMeter allows ClickHouse query injection via customer fields.
Is CVE-2026-18801 being exploited?
Not confirmed. CVE-2026-18801 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.23% probability of exploitation in the next 30 days.
How severe is CVE-2026-18801?
CVE-2026-18801 is rated Critical with a CVSS score of 9.3. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-18801?
Yes. A fix has been recorded for CVE-2026-18801. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-18801 affect?
CVE-2026-18801 affects OpenMeter v1.0.0-beta.218 - v1.0.0-beta.231, ClickHouse backend (queries executed by OpenMeter). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-18801?
Upgrade to a vendor-fixed OpenMeter release; if unavailable sanitize usageAttribution and restrict customer-create/update permissions.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Second-order SQL injection enabling arbitrary ClickHouse query execution, data exfiltration and query manipulation via crafted usageAttribution fields.
Immediate action required
- affected>= v1.0.0-beta.218 and <= v1.0.0-beta.231
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.