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Nango CVE-2026-92804

| EUVDEUVD-2026-81064 HIGH
Server-Side Request Forgery (SSRF) (CWE-918)
2026-09-16 VulnCheck GHSA-29mm-6vmq-g8cg
7.1
CVSS 4.0 · Vendor: VulnCheck
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Vendor (VulnCheck) PRIMARY
7.1 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
6.5 MEDIUM

Authenticated (PR:L) network SSRF with no user interaction; confidentiality-high from credential/metadata exfiltration, with no integrity or availability impact and scope unchanged.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

4
POC Analysis Generated
Sep 16, 2026 - 23:27 vuln.today
Metadata Corrected
Sep 16, 2026 - 22:40 vuln.today
tag: TypeScript added
Analysis Generated
Sep 16, 2026 - 21:48 vuln.today
CVE Published
Sep 16, 2026 - 20:32 cve.org
HIGH 7.1

DescriptionCVE.org

Nango through 0.70.4 fails to validate caller-supplied connection configuration values interpolated into provider token and proxy URL templates. Authenticated attackers can supply malicious configuration values to direct server requests at internal addresses or cloud metadata endpoints, potentially exfiltrating provider credentials.

AnalysisAI

Server-side request forgery in Nango through version 0.70.4 lets an authenticated user steer server-side HTTP requests to attacker-chosen destinations by supplying malicious values in connection configuration fields that Nango interpolates into provider token and proxy URL templates. Successful abuse can reach internal-only services or cloud instance metadata endpoints (for example 169.254.169.254) and potentially exfiltrate provider credentials held by the Nango deployment. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Requires an authenticated Nango account (PR:L) with the ability to supply connection configuration values that Nango interpolates into provider token URL or proxy URL templates (per the vulnerable interpolation logic in packages/shared/lib/utils/utils.ts through v0.70.4). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment Genuine but moderate priority. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Vendor advisory: patch available per the GitHub Security Advisory at https://github.com/NangoHQ/nango/security/advisories/GHSA-hgjm-c252-ccxx - upgrade off any 0.70.4-or-earlier release to the fixed version named in that advisory (an exact fix version is not confirmed by the available data, so validate against the advisory before upgrading); VulnCheck's advisory https://www.vulncheck.com/advisories/nango-through-0.70.4-server-side-request-forgery-via-configuration provides additional context. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, inventory every Nango deployment and confirm the running version against 0.70.4; where Nango is self-hosted in AWS, Azure, or GCP, immediately enforce IMDSv2-only on AWS instances or disable metadata endpoints elsewhere, and apply network egress restrictions so Nango hosts cannot reach link-local 169.254.169.254 or internal RFC1918 ranges. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-92804 vulnerability details – vuln.today

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