Vulnerability Description
Coder allows organizations to provision remote development environments via Terraform. In versions prior tp 2.24.5, 2.29.13, 2.30.8, 2.31.12, 2.32.2, and 2.33.3, `azureidentity.Validate()` verifies that the PKCS#7 signer certificate chains to a trusted Azure CA but never verifies the PKCS#7 signature itself. An attacker can embed a legitimate Azure certificate alongside arbitrary content e.g. `{"vmId":"<target>"}` and the forged `vmId` will be accepted returning the victim workspace agent's session token. No authentication is required. The attacker only needs to know a target VM's `vmId` which is a `UUIDv4`. That's a practical limitation which would typically require prior access to be exploited. 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, reconfigure any Azure templates to use token authentication rather than `azure-instance-identity`.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Coder | Coder | < 2.24.5 |
Related Weaknesses (CWE)
References
- https://github.com/coder/coder/pull/25286Issue 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-6x44-w3xg-hqqfPatchVendor Advisory
FAQ
What is CVE-2026-46354?
CVE-2026-46354 is a vulnerability with a CVSS score of 9.1 (CRITICAL). Coder allows organizations to provision remote development environments via Terraform. In versions prior tp 2.24.5, 2.29.13, 2.30.8, 2.31.12, 2.32.2, and 2.33.3, `azureidentity.Validate()` verifies th...
How severe is CVE-2026-46354?
CVE-2026-46354 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-46354?
Check the references section above for vendor advisories and patch information. Affected products include: Coder Coder.