All vulnerabilities
CVE-2026-23760

SmarterTools SmarterMail Authentication Bypass Using an Alternate Path or Channel Vulnerability

SmarterTools SmarterMail
Open in ThreatlineRecord JSON
CVSS
9.3Critical
ExploitationExploited in the wildAdded to KEV 26 Jan 2026. Known ransomware useCISA KEV
Exploit odds (EPSS)96.4%Chance of exploitation activity in the next 30 days, higher than 99% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in100.0.9511Fixed versionCVE List
Federal deadline16 Feb 2026Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA KEV

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Timeline

  1. 22 Jan 2026, 14:35 UTCPublishedCVE List
  2. 26 Jan 2026Added to CISA KEVCISA KEV

Public exploit code and templates 1

  • Scanner templateSmarterTools SmarterMail - Admin Password ResetNuclei

Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.

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.

Text from CVE List

Affected versions 1

  • SmarterMailaffected: all versions before 100.0.9511CVE List

References 7