CVE-2026-41232
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.
Does this matter?
Lower severity and a low EPSS score (0.23%). Track it; it rarely justifies an emergency change on its own.
Description
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
- 5.0 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
- EPSS
- 0.23% probability · 14th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-863
- Affected
- froxlor/froxlor
- Source
- security-advisories@github.com
References
- https://github.com/froxlor/froxlor/commit/77d04badf549d5f8429828f0fbc69bc37a35e07aPatch
- https://github.com/froxlor/froxlor/releases/tag/2.3.6Release Notes
- https://github.com/froxlor/froxlor/security/advisories/GHSA-vmjj-qr7v-pxm6Exploit, Mitigation, Vendor Advisory
- https://github.com/froxlor/froxlor/security/advisories/GHSA-vmjj-qr7v-pxm6Exploit, Mitigation, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.