Google Cloud DNS: command injection

OPNsense os-acme-client

An OS Command Injection vulnerability was discovered in the Google Cloud DNS validation module of the OPNsense os-acme-client plugin through 4.17. The DnsGcloud::prepare() method decodes the dns_gcloud_key model field and directly interpolates the string fields gcloud_account and gcloud_project into a shell command passed to proc_open()…

Do this now

No source names a fix yet: limit who can reach OPNsense os-acme-client until one does.

Still cooking for os-acme-client.

First seen: 6 Nov 2026
Last update: 6 Nov 2026, 12:17 UTC
Identifiers: CVE-2026-123025
CVSS: 9.4
Source: news

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## Google Cloud DNS: command injection
Severity: critical. Patch status: fix status unknown.
Affected: OPNsense os-acme-client
Ids: CVE-2026-123025

An OS Command Injection vulnerability was discovered in the Google Cloud DNS validation module of the OPNsense os-acme-client plugin through 4.17. The DnsGcloud::prepare() method decodes the dns_gcloud_key model field and directly interpolates the string fields gcloud_account and gcloud_project into a shell command passed to proc_open()…

## Steps
1. Search the repo, its CI and infra config for OPNsense os-acme-client. If present, report the version in use and whether it's affected.
2. os-acme-client <= 4.17.0: the CVE record names no fix; check the vendor advisory before assuming there is none. Until one ships: restrict network access to it.

## Fix by release line
| Line | State | Fix | Until then |
|---|---|---|---|
| os-acme-client <= 4.17.0 | not named in the CVE record | check the vendor advisory: https://github.com/opnsense/plugins/pull/5873 | restrict network access to it |

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve("CVE-2026-123025") for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://github.com/opnsense/plugins/pull/5873 https://nvd.nist.gov/vuln/detail/CVE-2026-123025
https://pwned.coffee/i/google-cloud-dns-command-injection-cve-2026-123025

Receipt

Exploitation: No known exploitation
Fix by release line: Product Affected Fixed in Source
os-acme-client <= 4.17.0 fix not named in the CVE record: see vendor advisory CVE record (CNA) checked 6 Nov
The CVE record names no fix for one line; the vendor’s advisory may: github.com
Score: CVSS 9.4 (critical). CVSS 4.0 9.4 (CNA mitre) for CVE-2026-123025
Last checked: 6 Nov 2026, 12:18 UTC

Product	Affected	Fixed in	Source
os-acme-client	<= 4.17.0	fix not named in the CVE record: see vendor advisory	CVE record (CNA) checked 6 Nov

Sources: KEV – CVE record ✓ Vendor ✓

Sources

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