Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since January 26, 2026.
CVE-2026-23760
SmarterTools SmarterMail Authentication Bypass Using an Alternate Path or Channel Vulnerability
Added to KEV January 26, 2026
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2026-23760
- CWE
- CWE-288
- Affected products
- SmarterMail · SmarterTools SmarterMail · SmarterTools
What happened
SmarterTools SmarterMail contains an authentication bypass using an alternate path or channel 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. This could allow an unauthenticated attacker to supply a target administrator username and a new password to reset the account, resulting in full administrative compromise of the SmarterMail instance.
What it means for your business
SmarterTools SmarterMail is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2026-23760). SmarterTools SmarterMail contains an authentication bypass using an alternate path or channel 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. This could allow an unauthenticated attacker to supply a target administrator username and a new password to reset the account, resulting in full administrative compromise of the SmarterMail instance. CISA remediation due date: 2026-02-16. If you need help checking exposure, call (864) 335-9223.
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA due date: February 16, 2026
Sources
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