CVE-2026-41232
mediumFroxlor is open source server administration software.
Vendor / product: Froxlor — froxlor
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N Affected products
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
References
- https://github.com/froxlor/froxlor/commit/77d04badf549d5f8429828f0fbc69bc37a35e07a security-advisories@github.com
- https://github.com/froxlor/froxlor/releases/tag/2.3.6 security-advisories@github.com
- https://github.com/froxlor/froxlor/security/advisories/GHSA-vmjj-qr7v-pxm6 security-advisories@github.com
- https://github.com/froxlor/froxlor/security/advisories/GHSA-vmjj-qr7v-pxm6 134c704f-9b21-4f2e-91b3-4a467353bcc0