CVE-2026-45796
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk26th percentile - higher than 26% of all known CVEs
Summary
Coder versions prior to 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 SSRF via the Azure instance identity endpoint. An external attacker can force the Coder server to issue HTTP GET requests to arbitrary hosts by sending a crafted PKCS#7 signature.
Risk Assessment
The risk is that an attacker can scan the internal network, determining which hosts are reachable and what type of failure occurred, potentially leading to further attacks.
Recommendation
Immediately update Coder to one of the patched versions. If the Azure identity-auth mechanism is not in use, restrict access to the /api/v2/workspaceagents/azure-instance-identity endpoint using ingress firewall or proxy ACLs.
Original NVD description (English source)
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.