CVE-2026-55429 Details
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.
A vulnerability in Coder's remote development environment provisioning via Terraform allows for cross-workspace app rebinding. This issue is present in Coder versions prior to 2.29.7, 2.32.7, 2.33.8, and 2.34.2. The vulnerability arises because the 'UpsertWorkspaceApp' function overwrites an existing app's 'agent_id' during primary-key conflicts. Additionally, 'insertAgentApp' accepts app IDs from the provisioner's 'CompleteJob' payload without verifying their association with the workspace being built. Exploitation requires elevated access as a template author or external provisioner operator, taking advantage of the authorization layer's failure to block cross-workspace operations.
Users can upgrade to Coder versions 2.29.17, 2.32.7, 2.33.8, or 2.34.2 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 8, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/coder/coder/pull/26103 | [email protected] | Issue TrackingPatch |
| https://github.com/coder/coder/releases/tag/v2.29.17 | [email protected] | Release Notes |
| https://github.com/coder/coder/releases/tag/v2.32.7 | [email protected] | Release Notes |
| https://github.com/coder/coder/releases/tag/v2.33.8 | [email protected] | Release Notes |
| https://github.com/coder/coder/releases/tag/v2.34.2 | [email protected] | Release Notes |
| https://github.com/coder/coder/security/advisories/GHSA-9rjw-3gwp-f59v | [email protected] | PatchVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-639 | Authorization Bypass Through User-Controlled Key | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| coder coder | < 2.29.17 >= 2.30.0, < 2.32.7 >= 2.33.0, < 2.33.8 >= 2.34.0, < 2.34.2 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 8, 2026 | Initial Analysis | [email protected] |
| Jul 8, 2026 | CVE Modified | CISA-ADP |
| Jul 8, 2026 | New CVE Received | [email protected] |