Smartermail CVE-2026-23760
CRITICALCVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
4DescriptionNVD
SmarterTools SmarterMail versions prior to build 9511 contain an authentication bypass vulnerability in the password reset API. The force-reset-password endpoint permits anonymous requests and fails to verify the existing password or a reset token when resetting system administrator accounts. An unauthenticated attacker can supply a target administrator username and a new password to reset the account, resulting in full administrative compromise of the SmarterMail instance. NOTE: SmarterMail system administrator privileges grant the ability to execute operating system commands via built-in management functionality, effectively providing administrative (SYSTEM or root) access on the underlying host.
AnalysisAI
SmarterTools SmarterMail prior to build 9511 contains a critical authentication bypass in the password reset API (CVE-2026-23760) that allows unauthenticated attackers to reset system administrator passwords without verification. With EPSS 65% and KEV listing, this trivially exploitable vulnerability enables complete email server takeover, compromising all hosted mailboxes and organizational communications.
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RemediationAI
Within 24 hours: Isolate all SmarterMail servers from public internet access and implement emergency access controls; verify admin account integrity and review access logs for suspicious password reset activity. Within 7 days: Deploy WAF rules to block the force-reset-password endpoint or require authentication tokens; implement network segmentation to restrict API access to authorized networks only. …
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External POC / Exploit Code
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