SmarterTools SmarterMail Missing Authentication for Critical Function Vulnerability

SmarterTools SmarterMail

SmarterTools SmarterMail contains a missing authentication for critical function vulnerability in the ConnectToHub API method. This could allow the attacker to point the SmarterMail instance to a malicious HTTP server which serves the malicious OS command and could lead to command execution. Added to CISA KEV on 2026-02-05 (federal deadline 2026-02-26).

First seen: 5 Feb 2026
Last update: 5 Feb 2026, 12:00 UTC
Identifiers: CVE-2026-24423
Source: CISA KEV
On the menu as: Enterprise apps

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## SmarterTools SmarterMail Missing Authentication for Critical Function Vulnerability
Severity: critical, exploited in the wild. Patch status: patched.
Affected: SmarterTools SmarterMail
Ids: CVE-2026-24423

SmarterTools SmarterMail contains a missing authentication for critical function vulnerability in the ConnectToHub API method. This could allow the attacker to point the SmarterMail instance to a malicious HTTP server which serves the malicious OS command and could lead to command execution. Added to CISA KEV on 2026-02-05 (federal deadline 2026-02-26).

## Steps
1. This touches infrastructure (erp). Look in terraform, ansible, cloud-init, Dockerfiles and docs for the product and version we run. If it isn't in the repo, say so and list what a human should check on the box.

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve("CVE-2026-24423") for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://nvd.nist.gov/vuln/detail/CVE-2026-24423 https://www.cve.org/CVERecord?id=CVE-2026-24423 https://www.smartertools.com/smartermail/release-notes/current
https://pwned.coffee/i/smartertools-smartermail-missing-authentication-for-crit-cve-2026-24423

Sources

Totalone very hot coffee