CVE-2026-41232

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 v3.1 Score

5.0

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N

EPSS — Exploit Prediction

0.0003

Probability of exploitation

0.10%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-863 Incorrect Authorization

Affected Products

Vendor	Product	Versions
froxlor	froxlor	< 2.3.6

References

Advisories & Patches

https://github.com/froxlor/froxlor/commit/77d04badf549d5f8429828f0fbc69bc37a35e07a https://github.com/froxlor/froxlor/security/advisories/GHSA-vmjj-qr7v-pxm6 https://github.com/froxlor/froxlor/security/advisories/GHSA-vmjj-qr7v-pxm6

Exploits

https://github.com/froxlor/froxlor/security/advisories/GHSA-vmjj-qr7v-pxm6 https://github.com/froxlor/froxlor/security/advisories/GHSA-vmjj-qr7v-pxm6

Other References

https://github.com/froxlor/froxlor/releases/tag/2.3.6

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 5.0 (MEDIUM).

How severe is CVE-2026-41232? +

CVE-2026-41232 has a CVSS v3.1 score of 5.0 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0003, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-41232? +

CVE-2026-41232 affects products from froxlor, specifically: froxlor. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-41232? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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