Linux · SUSE Linux Enterprise · Security advisory · June 22, 2026

SUSE-SU-2026:22340-1: mutt security update

SUSE-SU-2026:22340-1, 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	sles 16.0	2.2.16-160000.2.1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Routine	CVE-2026-43863	mutt: infinite loop in `data_object_to_stream` in `crypt-gpgme.c` (bsc#1263893).	3.7	0.0020	None reported
Routine	CVE-2026-43859	mutt: `strfcpy` used instead of `memcpy` for the IMAP `auth_cram` MD5 digest (bsc#1263897).	3.7	0.0016	None reported
Routine	CVE-2026-43860	mutt: truncation of `hash_passwd` by one byte for IMAP `auth_cram` MD5 digest (bsc#1263896).	3.7	0.0016	None reported
Routine	CVE-2026-43861	mutt: missing check for `\0` in `url_pct_decode` (bsc#1263895).	3.7	0.0016	None reported
Routine	CVE-2026-43862	mutt: mishandling of the `imap_auth_gss` security level (bsc#1263894).	3.7	0.0016	None reported
Routine	CVE-2026-43864	mutt: NULL pointer dereference in function `show_sig_summary` (bsc#1263892).	2.5	0.0010	None reported

Also fixes CVE-2026-43863

OPENSUSE-SU-2026:21016-1
mutt on opensuse-leap 16.0
DEBIAN-CVE-2026-43863
mutt on Debian 13.5 (trixie), Debian 14

Vendor advisory

https://osv.dev/vulnerability/SUSE-SU-2026:22340-1

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