Auth bypass in Froxlor
CVE-2026-41233
Froxlor is open source server administration software. Prior to version 2.3.6, in `Domains.add()`, the `adminid` parameter is accepted from user input and used without validation when the calling reseller does not have the `customers_see_all` permission. This allows a reseller to attribute newly created domains to any other admin, bypassing their own domain quota (since the wrong admin's `domains_used` counter is incremented) and potentially exhausting another admin's quota. Version 2.3.6 fixes the issue.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (29.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
- Froxlor — versions < 2.3.6
Weakness classification (CWE)
References
- github.com/froxlor/froxlor/security/advisories/GHSA-jvx4-xv3m-hrj4 (Exploit, Mitigation, Vendor Advisory)
- github.com/froxlor/froxlor/commit/bf47ba15329506e9f9662f9462463932aa80dff5 (Patch)
- github.com/froxlor/froxlor/releases/tag/2.3.6 (Release Notes)
Frequently asked questions
- What is CVE-2026-41233?
- CVE-2026-41233 is a medium-severity vulnerability in Froxlor, classified under Incorrect Authorization. CVSS score: 5.4/10. Published 2026-04-23.
- How severe is CVE-2026-41233?
- Medium severity. CVSS v3 base score is 5.4 out of 10.