Coder up to 2.33.2 Azure Instance Identity Endpoint azure-instance-identity server-side request forgery

Summaryinfo

A vulnerability described as problematic has been identified in Coder up to 2.33.2. This issue affects some unknown processing of the file /api/v2/workspaceagents/azure-instance-identity of the component Azure Instance Identity Endpoint. The manipulation results in server-side request forgery. This vulnerability is known as CVE-2026-45796. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in Coder up to 2.33.2. It has been classified as problematic. Affected is an unknown code block of the file /api/v2/workspaceagents/azure-instance-identity of the component Azure Instance Identity Endpoint. The manipulation with an unknown input leads to a server-side request forgery vulnerability. CWE is classifying the issue as CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. This is going to have an impact on confidentiality. CVE summarizes:

Coder allows organizations to provision remote development environments via Terraform. Versions prior tp 2.24.5, 2.29.13, 2.30.8, 2.31.12, 2.32.2, and 2.33.3 are vulnerable to unauthenticated semi-blind Server-Side Request Forgery (SSRF) via the Azure instance identity endpoint (`POST /api/v2/workspaceagents/azure-instance-identity`). An external attacker can force the Coder server to issue HTTP GET requests to arbitrary internal or external hosts by submitting a crafted PKCS#7 signature. The server does not return the target's response body, but error messages in the API response reveal whether the target is reachable and what type of failure occurred. Versions 2.24.5, 2.29.13, 2.30.8, 2.31.12, 2.32.2, and 2.33.3 patch the issue. As a workaround, if the Azure identity-auth mechanism is not being used then restrict access to the corresponding endpoint (`/api/v2/workspaceagents/azure-instance-identity`) using ingress firewall and/or proxy ACLs.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-45796 since 05/13/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit.

Upgrading to version 2.24.5, 2.29.13, 2.30.8, 2.31.12, 2.32.2 or 2.33.3 eliminates this vulnerability.

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Productinfo

Name

• Coder

Version

• 2.24.0
• 2.24.1
• 2.24.2
• 2.24.3
• 2.24.4
• 2.29.0
• 2.29.1
• 2.29.2
• 2.29.3
• 2.29.4
• 2.29.5
• 2.29.6
• 2.29.7
• 2.29.8
• 2.29.9
• 2.29.10
• 2.29.11
• 2.29.12
• 2.30.0
• 2.30.1
• 2.30.2
• 2.30.3
• 2.30.4
• 2.30.5
• 2.30.6
• 2.30.7
• 2.31.0
• 2.31.1
• 2.31.2
• 2.31.3
• 2.31.4
• 2.31.5
• 2.31.6
• 2.31.7
• 2.31.8
• 2.31.9
• 2.31.10
• 2.31.11
• 2.32.0
• 2.32.1
• 2.33.0
• 2.33.1
• 2.33.2

Website

• Product: https://github.com/coder/coder/

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CPE 2.2info

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