CVE-2026-45796

Vulnerability Description

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.

CVSS Score

Affected Products

Related Weaknesses (CWE)

References

• https://github.com/coder/coder/commit/57b11d405f17492aa789d4b9ff33366f961a37f8Patch
• https://github.com/coder/coder/pull/25274Issue TrackingPatch
• https://github.com/coder/coder/releases/tag/v2.24.5Release Notes
• https://github.com/coder/coder/releases/tag/v2.29.13Release Notes
• https://github.com/coder/coder/releases/tag/v2.30.8Release Notes
• https://github.com/coder/coder/releases/tag/v2.31.12Release Notes
• https://github.com/coder/coder/releases/tag/v2.32.2Release Notes
• https://github.com/coder/coder/releases/tag/v2.33.3Release Notes
• https://github.com/coder/coder/security/advisories/GHSA-686c-7vgv-v3fxPatchVendor Advisory