CVE-2026-46354: Coder

Critical severity, CVSS 9.1. EPSS: 0.3% chance of exploitation in the next 30 days.

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`.

Affected products

• Coder Coder: before 2.24.5 (fixed in 2.24.5); from 2.29.0, before 2.29.13 (fixed in 2.29.13); from 2.30.0, before 2.30.8 (fixed in 2.30.8); from 2.31.0, before 2.31.12 (fixed in 2.31.12); from 2.32.0, before 2.32.2 (fixed in 2.32.2); from 2.33.0, before 2.33.3 (fixed in 2.33.3)

Published 2026-07-07. Last modified 2026-07-08.