---
id: CVE-2024-49394
title: >-
  In mutt and neomutt the In-Reply-To email header field is not protected by
  cryptographic signing which allows an attacker to reuse an unencrypted but
  signed email message to impersonate the original sender.
summary: >-
  In mutt and neomutt the In-Reply-To email header field is not protected by
  cryptographic signing which allows an attacker to reuse an unencrypted but
  signed email message to impersonate the original sender.
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-347
vendor: mutt
product: mutt
affected:
  - mutt
  - neomutt
  - enterprise_linux = 8.0
  - enterprise_linux = 9.0
published: '2024-11-12'
updated: '2026-06-26'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-49394'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2024-49394'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2325330'
    label: secalert@redhat.com
  - url: 'https://github.com/neomutt/neomutt/issues/4226'
    label: secalert@redhat.com
  - url: 'https://github.com/neomutt/neomutt/pull/4221'
    label: secalert@redhat.com
  - url: 'https://github.com/neomutt/neomutt/pull/4227'
    label: secalert@redhat.com
tags:
  - nvd
epss: 0.00325
epssPercentile: 0.22875
ingestedAt: '2026-06-26T16:43:13.394Z'
---

## Overview

In mutt and neomutt the In-Reply-To email header field is not protected by cryptographic signing which allows an attacker to reuse an unencrypted but signed email message to impersonate the original sender.

## Affected

- `mutt`
- `neomutt`
- `enterprise_linux = 8.0`
- `enterprise_linux = 9.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.