OAuth token disclosure via unconditional header forwarding
Published Jun 15, 2022 · Updated Apr 23, 2025
Sensitive information exposure in Finastra nestjs-proxy before 0.7.0 allows attackers to expose OAuth bearer tokens to backend services. The proxy forwards each incoming Authorization header to the selected configured service without a per-service suppression control. The gate is an authenticated request routed through such a service, and the direct consequence is disclosure of its bearer token to that backend.
Summary
What happened
Sensitive information exposure in Finastra nestjs-proxy before 0.7.0 allows attackers to expose OAuth bearer tokens to backend services. The proxy forwards each incoming Authorization header to the selected configured service without a per-service suppression control. The gate is an authenticated request routed through such a service, and the direct consequence is disclosure of its bearer token to that backend.
The record
- CVE
- CVE-2022-31069
- Published
- Jun 15, 2022
- Updated
- Apr 23, 2025
- Vendor
- Finastra
- Product
- Finastra Node.js Libraries
- Classifications
- CWE-200
- Attack vector
- local
- Privileges
- admin
Timeline
How it unfolded
- Jun 15, 2022CVE publishedPublication date reported by the CVE source.
- Apr 23, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=< 0.7.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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