CVE-2026-43862

mutt: Mutt: Security bypass due to mishandled IMAP authentication

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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. The imap_auth_gss security level, which is used for secure IMAP (Internet Message Access Protocol) authentication, is mishandled. This vulnerability could allow an attacker to bypass certain security protections, potentially leading to a low impact on data integrity.

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:L/A:N

CWE-843 · Access of Resource Using Incompatible Type ('Type Confusion')