Internal data access via redirected HTTP requests
Published Aug 6, 2024 · Updated Jul 10, 2025
Server-side request forgery in Microsoft Copilot Studio allows remote authenticated users to read and write internal cloud data. A custom topic's HttpRequestAction follows attacker-controlled redirects to blocked metadata addresses, while newline-bearing headers neutralize the Azure IMDS-blocked X-Forwarded-For header. A user able to create a custom copilot can obtain a managed identity token and use further requests to access shared internal Cosmos DB documents, creating cross-tenant exposure.
Summary
What happened
Server-side request forgery in Microsoft Copilot Studio allows remote authenticated users to read and write internal cloud data. A custom topic's HttpRequestAction follows attacker-controlled redirects to blocked metadata addresses, while newline-bearing headers neutralize the Azure IMDS-blocked X-Forwarded-For header. A user able to create a custom copilot can obtain a managed identity token and use further requests to access shared internal Cosmos DB documents, creating cross-tenant exposure.
The record
- CVE
- CVE-2024-38206
- Published
- Aug 6, 2024
- Updated
- Jul 10, 2025
- Vendor
- Microsoft
- Product
- Microsoft Copilot Studio
- Classifications
- CWE-918, T1552.005
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 6, 2024CVE publishedPublication date reported by the CVE source.
- Jul 10, 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=N/A
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
- Copilot Studio HttpRequestAction redirect and header-newline proofproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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