Vulnerability · Published Sep 21, 2026 · Assigned by GitHub_M

CVE-2026-65980Chartbrew: SQL Injection via Missing Backslash Escaping in ClickHouse Variable Substitution

High 7.9

In plain English

A high-severity SQL injection in chartbrew from chartbrew. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).

Severity (CVSS 4.0)7.9High

Exploit odds (30 days)0.5%top 59.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Chartbrew is an open-source web application that can connect directly to databases and APIs and use the data to create charts. Prior to 5.2.3, Chartbrew's ClickHouse protocol in server/sources/plugins/clickhouse/clickhouse.protocol.js calls applySqlVariables() from server/sources/shared/sql/sql.variables.js without enabling the escapeBackslash option. For a ClickHouse-backed chart with variable binding, an attacker can supply a backslash before a quote so quote doubling does not keep the value within its intended SQL string literal. Public dashboards can expose this path without authentication, and successful exploitation can execute arbitrary ClickHouse SQL to disclose data or, when the database configuration permits, access files or internal network resources. This issue is fixed in version 5.2.3.

Affected products (as reported)

Vendor	Product	Versions
chartbrew	chartbrew	< 5.2.2

Weakness: CWE-89 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H

References

https://github.com/chartbrew/chartbrew/security/advisories/GHSA-5jgv-45cw-hc53 x_refsource_CONFIRM
https://github.com/chartbrew/chartbrew/commit/5f95d07b5fee7f69c9d1242b5c99ea11ff046341 x_refsource_MISC
https://github.com/chartbrew/chartbrew/releases/tag/v5.2.3 x_refsource_MISC