---
cve: "CVE-2026-46354"
severity: "CRITICAL"
cvss: 9.1
epss: "26%"
vendor: "coder"
kev: false
exploited: false
published: "2026-07-07 22:16:52"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-10T08:36:23+02:00"
---

# CVE-2026-46354

> 9.1 CRITICAL · 🧪 PoC

## Beschreibung

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":""}` 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-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- cc4907395be7cfd58f3cb19fe1b97f38730bfeec (Commit)
- 25ddc1cb787ae88af6040590f676b3d31a63e225 (Commit)

## Referenzen

- <https://github.com/coder/coder/security/advisories/GHSA-6x44-w3xg-hqqf>
- <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>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-46354) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_