Vulnerability · Published Apr 23, 2026 · Assigned by GitHub_M

CVE-2026-41233Froxlor has a Reseller Domain Quota Bypass via Unvalidated adminid Parameter in Domains.add()

Medium 5.4

In plain English

A medium-severity incorrect authorization in froxlor from froxlor. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.4Medium

Exploit odds (30 days)0.3%top 81.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	froxlor/froxlor	2.3.6	GHSA-jvx4-xv3m-hrj4

Affected products (as reported)

Vendor	Product	Versions
froxlor	froxlor	< 2.3.6

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

References

https://github.com/froxlor/froxlor/security/advisories/GHSA-jvx4-xv3m-hrj4 x_refsource_CONFIRM
https://github.com/froxlor/froxlor/commit/bf47ba15329506e9f9662f9462463932aa80dff5 x_refsource_MISC
https://github.com/froxlor/froxlor/releases/tag/2.3.6 x_refsource_MISC