Chartbrew: SQL Injection via Missing Backslash Escaping in ClickHouse Variable Substitution
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-65980
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 5 Nov 2026, 03:51 UTC · Revision 1
Source evidence
Chartbrew: SQL Injection via Missing Backslash Escaping in ClickHouse Variable Substitution
core-osv · Original sourcePublished 21 Sept 2026, 21:41 UTC
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.
osv:CVE-2026-65980
Complete source record
{
"id": "7b472738c44609811de26234f65005b2a16127a2ede0f3c4a4c4422d20ed4b77",
"url": "https://osv.dev/vulnerability/CVE-2026-65980",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Chartbrew: SQL Injection via Missing Backslash Escaping in ClickHouse Variable Substitution",
"summary": "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.",
"evidence": "osv:CVE-2026-65980",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-65980",
"aliases": [
"CVE-2026-65980",
"GHSA-5jgv-45cw-hc53"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "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"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/chartbrew/chartbrew",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "e14ffa0705586f27a19e051d74263fa0a7f94426"
},
{
"fixed": "5f95d07b5fee7f69c9d1242b5c99ea11ff046341"
},
{
"fixed": "abfa887408aeedfb5ed8f39f81557db72c49a1c4"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "5.2.2"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "5f95d07b5fee7f69c9d1242b5c99ea11ff046341"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "abfa887408aeedfb5ed8f39f81557db72c49a1c4"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v5.2.3"
}
]
}
}
],
"versions": [
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"v2.0.0",
"v2.0.0-rc.2",
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"v1.0.0-beta.4.2",
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"v1.0.0-beta.1.1",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-65980.json"
}
}
],
"modified": "2026-10-28T02:30:42.355483021Z",
"provider": "osv",
"references": [
"https://github.com/chartbrew/chartbrew/releases/tag/v5.2.3",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65980.json",
"https://github.com/chartbrew/chartbrew/security/advisories/GHSA-5jgv-45cw-hc53",
"https://nvd.nist.gov/vuln/detail/CVE-2026-65980",
"https://github.com/chartbrew/chartbrew/commit/5f95d07b5fee7f69c9d1242b5c99ea11ff046341"
],
"provider_metadata": {
"cwe_ids": [
"CWE-89"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65980.json"
}
},
"related_cves": [
{
"value": "CVE-2026-65980",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 509986,
"published_at": "2026-09-21T21:41:45.582+00:00"
}