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TI-2026-29841 Aliases CVE-2026-41232GHSA-vmjj-qr7v-pxm6

Incorrect authorization in froxlor

Priority MEDIUM 56CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-863.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00231 13th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed froxlor (froxlor): 2.3.6froxlor/froxlor (Packagist): 2.3.6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
froxlorfroxlorbefore 2.3.62.3.6Patch availableCNA
—froxlor/froxlor (Packagist)before 2.3.62.3.6Patch availableGHSA-vmjj-qr7v-pxm6
  • froxlor Vendorfroxlor Affected before 2.3.6 Fixed in 2.3.6 Patch available CNA
  • froxlor/froxlor (Packagist) Vendor— Affected before 2.3.6 Fixed in 2.3.6 Patch available GHSA-vmjj-qr7v-pxm6

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:froxlor:froxlor:*:*:*:*:*:*:*:*before 2.3.6Vulnerablefroxlor
  • cpe:2.3:a:froxlor:froxlor:*:*:*:*:*:*:*:* Versions before 2.3.6 Vulnerable ·froxlor

Remediation

  • Fix · CNA froxlor (froxlor) Fixed in 2.3.6
  • Fix · GHSA-vmjj-qr7v-pxm6 froxlor/froxlor (Packagist) Fixed in 2.3.6 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-41232
  2. 2026-10-03 Alias added: GHSA-vmjj-qr7v-pxm6

References

Exploit 1

Patch 1

Advisory 1

Other 2

  • TI-2023-00300 Command Injection in froxlor/froxlor CVSS 3.1HIGH 8.8
  • TI-2023-02973 Improper Restriction of Excessive Authentication Attempts in froxlor/froxlor CVSS 3.1CRITICAL 9.8
  • TI-2023-01234 Authentication Bypass by Primary Weakness in froxlor/froxlor CVSS 3.1CRITICAL 9.8
  • TI-2023-01911 Unrestricted Upload of File with Dangerous Type in froxlor/froxlor CVSS 3.1HIGH 8.8
  • TI-2026-29837 Froxlor has Local File Inclusion via path traversal in API `def_language` parameter that leads to Remote Code Execution CVSS 3.1CRITICAL 10.0
  • TI-2026-29838 Froxlor has a PHP Code Injection via Unescaped Single Quotes in userdata.inc.php Generation (MysqlServer API) CVSS 3.1CRITICAL 9.1
See all 46 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences