Chartbrew: DNS Rebinding SSRF Bypass in Outbound Request Validation

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-61743
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-21 22:16:57 UTC
Updated2026-09-24 21:25:27 UTC
DescriptionChartbrew 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.

Risk And Classification

Primary CVSS: v3.1 6.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

EPSS: 0.004050000 probability, percentile 0.320920000 (date 2026-09-25)

Problem Types: CWE-350 | CWE-350 CWE-350: Reliance on Reverse DNS Resolution for a Security-Critical Action

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.3MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
3.1CNADECLARED6.3MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Chartbrew Chartbrew affected < 5.2.2 Not specified

References

ReferenceSourceLinkTags
github.com/chartbrew/chartbrew/security/advisories/GHSA-9537-vm84-j26f 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/chartbrew/chartbrew/releases/tag/v5.2.2 [email protected] github.com
github.com/chartbrew/chartbrew/commit/d38d745fe9e45563be8c33e4c7a17788ee... [email protected] github.com
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