Low severity · published May 4, 2026
CVE-2026-43862
In mutt before 2.3.2, the imap_auth_gss security level is mishandled
3.7
CVSS
0.2%
EPSS
No
On KEV
Description
In mutt before 2.3.2, the imap_auth_gss security level is mishandled.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MU
mutt · mutt
before 2.3.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-43862
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-43862
github.com
https://github.com/muttmua/mutt/commit/f547a849cdacb512800a5f477c27de217e1c8151
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