CVE-2026-121434
Medium
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.
SeverityMedium
CVSS5.4
Exploit probability—
ProductFroxlor
PublishedNov 3, 2026
First seenNov 4, 2026
Weakness typeCWE-862Missing authorization
How to fix
Update
- froxlor froxlor2.3.15 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| froxlor froxlor | 2.3.0 ≤ v < 2.3.15 | 2.3.15 |
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