CVE-2026-41232
Froxlor is open source server administration software. Prior to version 2.3.6, in `EmailSender::add()`, the domain ownership validation for full email sender aliases uses the wrong array index when splitting the email address, passing the local part instead of the domain to `validateLocalDomainOwnership()`. This causes the ownership check to always pass for non-existent "domains," allowing any authenticated customer to add sender aliases for email addresses on domains belonging to other customers. Postfix's `sender_login_maps` then authorizes the attacker to send emails as those addresses. Version 2.3.6 fixes the issue.
- Score
- CVSS 3.1 5.0 Medium
- Status
- Analyzed - security-advisories@github.com
- Published
- 2026-04-23
- Last modified
- 2026-04-23
- Weaknesses
- CWE-863
Affected products
References
- https://github.com/froxlor/froxlor/commit/77d04badf549d5f8429828f0fbc69bc37a35e07a
- https://github.com/froxlor/froxlor/releases/tag/2.3.6
- https://github.com/froxlor/froxlor/security/advisories/GHSA-vmjj-qr7v-pxm6
