OPENSUSE-SU-2026:21016-1: mutt security update

OPENSUSE-SU-2026:21016-1, released June 22, 2026, fixes 6 CVEs in mutt (version 2.2.16-160000.2.1). None of them is reported as exploited. Patch Radar priority: Routine.

Routine

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

3.7

Base score, 0 to 10

Highest EPSS

0.0020

10th percentile

Priority of the 6 CVEs

Patch now 0
                                Urgent 0
                                High 0
                                Routine 6

Fixed package versions

Product	Release	Fixed in
mutt	opensuse-leap 16.0	2.2.16-160000.2.1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Routine	CVE-2026-43863	mutt: mutt before 2.3.2 has an infinite loop in data_object_to_stream in crypt-gpgme.c.	3.7	0.0020	None reported
Routine	CVE-2026-43859	mutt: mutt before 2.3.2 sometimes uses strfcpy instead of memcpy for the IMAP auth_cram MD5 digest.	3.7	0.0016	None reported
Routine	CVE-2026-43860	mutt: mutt before 2.3.2 sometimes truncates the hash_passwd by one byte for IMAP auth_cram MD5 digest.	3.7	0.0016	None reported
Routine	CVE-2026-43861	mutt: mutt before 2.3.2 does not check for '\0' in url_pct_decode.	3.7	0.0016	None reported
Routine	CVE-2026-43862	mutt: In mutt before 2.3.2, the imap_auth_gss security level is mishandled.	3.7	0.0016	None reported
Routine	CVE-2026-43864	mutt: mutt before 2.3.2 has a show_sig_summary NULL pointer dereference.	2.5	0.0010	None reported

Also fixes CVE-2026-43863

SUSE-SU-2026:22340-1
mutt on sles 16.0
DEBIAN-CVE-2026-43863
mutt on Debian 13.5 (trixie), Debian 14

Vendor advisory

https://osv.dev/vulnerability/openSUSE-SU-2026:21016-1

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