ACTIVELY EXPLOITED
CVE-2026-23760: SmarterTools SmarterMail Authentication Bypass Using an Alternate Path or Channel Vulnerability
| Vendor | SmarterTools |
|---|---|
| Product | SmarterMail |
| Actively exploited | Yes |
| Added to CISA KEV | 26 Jan 2026 |
| CISA federal deadline | 16 Feb 2026 |
| Ransomware use | Known |
| Weakness (CWE) | CWE-288 |
Required action (CISA's text)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Description (NVD)
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.
SOURCES
Other SmarterTools flaws
- CVE-2026-24423: SmarterTools SmarterMail Missing Authentication for Critical Function Vulnerability
- CVE-2025-52691: SmarterTools SmarterMail Unrestricted Upload of File with Dangerous Type Vulnerability
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.