CVE-2026-46354
critical · 9.1Coder 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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weaknesses
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| coder | coder | < 2.24.5 |
| coder | coder | >= 2.29.0, < 2.29.13 |
| coder | coder | >= 2.30.0, < 2.30.8 |
| coder | coder | >= 2.31.0, < 2.31.12 |
| coder | coder | >= 2.32.0, < 2.32.2 |
| coder | coder | >= 2.33.0, < 2.33.3 |
Check a specific version with /api/v1/cve/match.
References
- https://github.com/coder/coder/pull/25286
- https://github.com/coder/coder/releases/tag/v2.24.5
- https://github.com/coder/coder/releases/tag/v2.29.13
- https://github.com/coder/coder/releases/tag/v2.30.8
- https://github.com/coder/coder/releases/tag/v2.31.12
- https://github.com/coder/coder/releases/tag/v2.32.2
- https://github.com/coder/coder/releases/tag/v2.33.3
- https://github.com/coder/coder/security/advisories/GHSA-6x44-w3xg-hqqf
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2026-46354