CVE-2026-55429: 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…

PriorityP348high8.7CVSS 3.1

AVNACLPRHUINSCCHIHAN

EPSS

0.51%

42.4th percentile

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.

Affected

11 ranges

Vendor	Product	Version range	Fixed in
coder	coder	< 2.29.17	2.29.17
coder	coder	—	—
coder	coder	—	—
coder	coder	—	—
coder	coder	>= 2.30.0 < 2.32.7	2.32.7
coder	coder	>= 2.33.0 < 2.33.8	2.33.8
coder	coder	>= 2.34.0 < 2.34.2	2.34.2
github.com	coder_coder_v2	>= 0 < 2.29.17	2.29.17
github.com	coder_coder_v2	>= 2.30.0 < 2.32.7	2.32.7
github.com	coder_coder_v2	>= 2.33.0 < 2.33.8	2.33.8
github.com	coder_coder_v2	>= 2.34.0 < 2.34.2	2.34.2

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