What is CVE-2026-43862?

CVE-2026-43862 is a low-severity vulnerability in Mutt, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 3.7/10. Published 2026-05-04.

How severe is CVE-2026-43862?

Low severity. CVSS v3 base score is 3.7 out of 10.

Vulnerability in Mutt

CVE-2026-43862

In mutt before 2.3.2, the imap_auth_gss security level is mishandled.

EPSS: 0.000 (11.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Mutt — versions 0

Weakness classification (CWE)

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

References

cve@mitre.org

Frequently asked questions

What is CVE-2026-43862?: CVE-2026-43862 is a low-severity vulnerability in Mutt, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 3.7/10. Published 2026-05-04.
How severe is CVE-2026-43862?: Low severity. CVSS v3 base score is 3.7 out of 10.