Description
Froxlor 2.3.0 before 2.3.15 contains a missing authorization check in the Certificates.add and Certificates.update API commands, which do not verify whether a domain's certificate is Let's Encrypt-managed. Customers with API access can overwrite the managed certificate and private key with an attacker-chosen pair, which a REBUILD_VHOST task deploys to the webserver, breaking HTTPS and desynchronizing ACME automation.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| froxlor | froxlor | 2.3.0 – < 2.3.15 | 2.3.15 |
Advisories 1
- WID-SEC-2026-4050 Froxlor: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 3, 2026
References
- GitHub Security Advisory (GHSA-ch7m-649m-x7xg) vendor-advisory
- VulnCheck Advisory: Froxlor 2.3.0 before 2.3.15 Authorization Bypass via Certificates.update API third-party-advisory