Vulnerability in froxlor

[ Description ]Official 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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund19 Oct 2026WID-SEC-2026-4050

  Froxlor: Multiple vulnerabilities Translated from German

  Risk highCVE-2026-121434CVE-2026-113677CVE-2026-113676+3 more CVEs

[ References ]References

• github.com/froxlor/froxlor/security/advisories/GHSA-ch7m-649m-x7xg
• www.vulncheck.com/advisories/froxlor-2.3.0-before-2.3.15-authorization-bypass-via-certi…