SmarterTools SmarterMail Authentication Bypass Using an Alternate Path or Channel Vulnerability
CVE-2026-23760
How serious is it
- Severity: not rated yet.
- Exploit prediction (EPSS): 96% chance of exploitation in the next 30 days, higher than 100% of all vulnerabilities.
- Confirmed exploited in the wild (CISA KEV).
- No public exploit in Exploit-DB.
Is your app affected by CVE-2026-23760?
Paste this prompt into Claude Code, Cursor or any AI coding tool: it runs a free Shippable scan of your project and fixes what it finds. Built with Lovable, Bolt or v0? Scan your live app. Or upload your package file.
Who is affected
- SmarterTools SmarterMail
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
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.
Check your whole app
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References
- No references listed.
Merged from CISA KEV, FIRST EPSS. Last updated 23 Oct 2026. All vulnerabilities · RSS · JSON