CVE-2026-55429
Description
Coder allows organizations to provision remote development environments via Terraform. Prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2, `UpsertWorkspaceApp` overwrites an existing app's `agent_id` on a primary-key conflict and `insertAgentApp` accepts the app ID from the provisioner's `CompleteJob` payload without verifying it belongs to the workspace being built. `CompleteJob` runs under `dbauthz.AsProvisionerd` so the authorization layer does not block the cross-workspace upsert. Exploitation requires elevated access as a template author or external provisioner operator. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 verifies that any existing `workspace_apps` row matching the supplied ID belongs to the workspace being built and rejects cross-workspace agent reassignment. No known workarounds are available.
How to fix
- coder coder2.29.17, 2.32.7, 2.33.8, 2.34.2 or later
- github.com/coder/coder/v22.34.2, 2.33.8, 2.32.7, 2.29.17 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| coder coder | v < 2.29.17, 2.30.0 ≤ v < 2.32.7, 2.33.0 ≤ v < 2.33.8, 2.34.0 ≤ v < 2.34.2 | 2.29.17, 2.32.7, 2.33.8, 2.34.2 |
| github.com/coder/coder/v2Go | 2.34.0 ≤ v < 2.34.2, 2.33.0 ≤ v < 2.33.8, 2.30.0 ≤ v < 2.32.7, v < 2.29.17 | 2.34.2, 2.33.8, 2.32.7, 2.29.17 |
| github.com/coder/coderGo | No range specified | — |
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