CVE-2026-43863

mutt: Mutt: Remote Denial of Service via crafted input

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Severity

Low

Red Hat Product Security

3.7

CVSS 3.1

Review impact separately from score.

Published · May 4, 2026

Updated · July 2, 2026

Description

A flaw was found in mutt, an email client. A remote attacker could exploit this vulnerability by sending specially crafted input, which would trigger an infinite loop in the data_object_to_stream function. This issue, located in the crypt-gpgme.c component, can lead to a Denial of Service (DoS), causing the application to become unresponsive.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 3.7
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')