Credential theft via unvalidated URL template interpolation
Published Sep 16, 2026 · Updated Sep 21, 2026
SSRF in Nango 0 through 0.70.4 allows remote authenticated users to send server requests to internal hosts via connection configuration. getConnectionConfig and POST /connections accept unchecked values that token_url and proxy.base_url templates interpolate before fetch or axios requests. A Nango API key or session token is required; successful requests can read cloud metadata or disclose OAuth client credentials.
Summary
What happened
SSRF in Nango 0 through 0.70.4 allows remote authenticated users to send server requests to internal hosts via connection configuration. getConnectionConfig and POST /connections accept unchecked values that token_url and proxy.base_url templates interpolate before fetch or axios requests. A Nango API key or session token is required; successful requests can read cloud metadata or disclose OAuth client credentials.
The record
- CVE
- CVE-2026-92804
- Published
- Sep 16, 2026
- Updated
- Sep 21, 2026
- Vendor
- Nango
- Product
- Nango
- Classifications
- CWE-918, T1552.005
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 16, 2026CVE publishedPublication date reported by the CVE source.
- Sep 21, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=0.70.4
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Activity data is delayed. The latest report is Sep 28, 2026.
Weakness, pattern, technique
Public exploit references
- GHSA-hgjm-c252-ccxx reproduction procedureproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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