Chartbrew: DNS Rebinding SSRF Bypass in Outbound Request Validation
Chartbrew is an open-source web application that can connect directly to databases and APIs and use the data to create charts. Prior to 5.2.2, Chartbrew's server/modules/safeRequest.js calls validateOutboundUrl() to resolve and validate a target hostname, but request-promise performs a separate DNS resolution for the actual connection. An authenticated user who can create or test API connections and controls the target DNS name can return a public address during validation and a private address during the request, bypassing the protections implemented by server/modules/outboundTargetPolicy.js. This DNS rebinding condition can expose internal services, localhost resources, or cloud metadata endpoints. This issue is fixed in version 5.2.2.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-61743
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 01:15 UTC · Revision 1
Source evidence
Chartbrew: DNS Rebinding SSRF Bypass in Outbound Request Validation
core-osv · Original sourcePublished 21 Sept 2026, 21:38 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 5.2.2, Chartbrew's server/modules/safeRequest.js calls validateOutboundUrl() to resolve and validate a target hostname, but request-promise performs a separate DNS resolution for the actual connection. An authenticated user who can create or test API connections and controls the target DNS name can return a public address during validation and a private address during the request, bypassing the protections implemented by server/modules/outboundTargetPolicy.js. This DNS rebinding condition can expose internal services, localhost resources, or cloud metadata endpoints. This issue is fixed in version 5.2.2.
osv:CVE-2026-61743
Complete source record
{
"id": "8899a301e972f231ab475e422154ba287febb42dd733f771cca7539faaebe545",
"url": "https://osv.dev/vulnerability/CVE-2026-61743",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Chartbrew: DNS Rebinding SSRF Bypass in Outbound Request Validation",
"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 5.2.2, Chartbrew's server/modules/safeRequest.js calls validateOutboundUrl() to resolve and validate a target hostname, but request-promise performs a separate DNS resolution for the actual connection. An authenticated user who can create or test API connections and controls the target DNS name can return a public address during validation and a private address during the request, bypassing the protections implemented by server/modules/outboundTargetPolicy.js. This DNS rebinding condition can expose internal services, localhost resources, or cloud metadata endpoints. This issue is fixed in version 5.2.2.",
"evidence": "osv:CVE-2026-61743",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-61743",
"aliases": [
"CVE-2026-61743",
"GHSA-9537-vm84-j26f"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/chartbrew/chartbrew",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "e14ffa0705586f27a19e051d74263fa0a7f94426"
},
{
"fixed": "d38d745fe9e45563be8c33e4c7a17788ee6f13a3"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "5.2.2"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "d38d745fe9e45563be8c33e4c7a17788ee6f13a3"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "e14ffa0705586f27a19e051d74263fa0a7f94426"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v5.2.2"
}
]
}
}
],
"versions": [
"v5.2.1",
"v5.2.0",
"v5.1.0",
"v5.0.1",
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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.4",
"v1.0.0-beta.3",
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"v1.0.0-beta.2.1",
"v1.0.0-beta.2",
"v1.0.0-beta.1.1",
"v1.0.0-beta.1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-61743.json"
}
}
],
"modified": "2026-10-28T02:30:24.969711055Z",
"provider": "osv",
"references": [
"https://github.com/chartbrew/chartbrew/releases/tag/v5.2.2",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61743.json",
"https://github.com/chartbrew/chartbrew/security/advisories/GHSA-9537-vm84-j26f",
"https://nvd.nist.gov/vuln/detail/CVE-2026-61743",
"https://github.com/chartbrew/chartbrew/commit/d38d745fe9e45563be8c33e4c7a17788ee6f13a3"
],
"provider_metadata": {
"cwe_ids": [
"CWE-350"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61743.json"
}
},
"related_cves": [
{
"value": "CVE-2026-61743",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 491504,
"published_at": "2026-09-21T21:38:47.673+00:00"
}