CVEvulnerability

CVE-2026-23760

9.3 CRITICAL Known exploited Published 2026-01-22 Modified 2026-08-04 Official page ↗

CISA Known Exploited Vulnerability

SmarterTools SmarterMail Authentication Bypass Using an Alternate Path or Channel Vulnerability — SmarterTools SmarterMail

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.

Added to KEV: 2026-01-26
Remediation due: 2026-02-16
Ransomware use: Known
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.
Notes: https://www.smartertools.com/smartermail/release-notes/current ; https://nvd.nist.gov/vuln/detail/CVE-2026-23760

Status: Analyzed
Published: 2026-01-22
Last modified: 2026-08-04
Assigner: [email protected]
CVSS 4.0 ([email protected]): 9.3 CRITICAL — CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1 ([email protected]): 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses: CWE-288

Description

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.

Affected configurations

• smartertools smartermail (< 100.0.9511)

Weakness · CWE (1)

CWE-288 Authentication Bypass Using an Alternate Path or Channel weakness

References