CVE-2026-100718 (GCVE-0-2026-100718)
Vulnerability from cvelistv5 – Published: 2026-09-26 13:24 – Updated: 2026-09-26 23:07
VLAI
EPSS
VEX
Title
Froxlor before 2.3.12 Authentication Bypass via EmailSender.add
Summary
Froxlor through 2.3.10 does not enforce the mail.allow_external_domains policy in the EmailSender.add API command. When an administrator has enabled the allowed-sender feature but disabled external allowed-sender domains (mail.enable_allow_sender = 1, mail.allow_external_domains = 0), an authenticated customer with API access can still use EmailSender.add to register an arbitrary external sender address for their mailbox, which is stored despite the policy. This creates a bypass between the UI/administrator configuration and the API, and — where the generated mail configuration consumes the allowed-sender table — allows a customer to authorize sender identities outside their hosted domains, facilitating sender spoofing. Fixed in 2.3.12.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-26 23:06 UTC
CWE
- CWE-276 - Incorrect Default Permissions
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/froxlor/froxlor/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/froxlor-befo… | third-party-advisory |
Impacted products
Date Public
2026-09-06 00:00
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