CVE-2026-23760 — SmarterTools SmarterMail Authentication Bypass Using an Alternate Path or Channel Vulnerability
CVE-2026-23760: SmarterTools SmarterMail Authentication Bypass Using an Alternate Path or Channel Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | SmarterTools |
| Product | SmarterMail |
| Date added | 2026-01-26 |
| Due date | 2026-02-16 |
| Ransomware campaign use | Known |
Description
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.
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notes
https://www.smartertools.com/smartermail/release-notes/current ; https://nvd.nist.gov/vuln/detail/CVE-2026-23760
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-23760
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog