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CVE-2026-23760

SmarterTools SmarterMail < Build 9511 Authentication Bypass via Password Reset API

Basic Information

CVE State
PUBLISHED
Reserved Date
January 15, 2026
Published Date
January 22, 2026
Last Updated
March 05, 2026
Vendor
SmarterTools
Product
SmarterMail
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.
Tags
cisa nuclei_scanner

CVSS Scores

CVSS v4.0

9.3 - CRITICAL

Vector: 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

SSVC Information

Exploitation
active
Automatable
Yes
Technical Impact
total

Exploit Status

Exploited in the Wild
Yes (2026-06-01 10:49:49 UTC) Source
Proof of Concept Available
Yes (added 2026-01-24 12:30:34 UTC) Source

References

https://www.smartertools.com/smartermail/release-notes/current https://labs.watchtowr.com/attackers-with-decompilers-strike-again-smartertools-smartermail-wt-2026-0001-auth-bypass/ https://code-white.com/public-vulnerability-list/#authenticationserviceforceresetpassword-missing-authentication-in-smartermail https://www.vulncheck.com/advisories/smartertools-smartermail-authentication-bypass-via-password-reset-api

Known Exploited Vulnerability Information

Source Added Date
CVE 2026-06-01 10:49:49 UTC

Scanner Integrations

Scanner URL Date Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-23760.yaml 2026-06-01 15:34:44 UTC

Potential Proof of Concepts

Warning: These PoCs have not been tested and could contain malware. Use at your own risk.

MaxMnMl/smartermail-CVE-2026-23760-poc

Type: github • Created: 2026-01-24 12:30:34 UTC • Stars: 3

CVE-2026-23760 - An authentication bypass via password reset API in SmarterMail.

Timeline

  • CVE ID Reserved

  • CVE Published to Public

  • Proof of Concept Exploit Available

  • Added to KEVIntel

  • Detected by Nuclei