SUSE alert openSUSE-SU-2026:21016-1 (mutt)

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null@suse.de
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security-announce@lists.opensuse.org
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openSUSE-SU-2026:21016-1: moderate: Security update for mutt
Date:
             
 
Tue, 30 Jun 2026 09:47:56 +0200
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<20260630074756.556A6FF26@maintenance.suse.de>
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Article
openSUSE security update: security update for mutt
-------------------------------------------------------------

Announcement ID: openSUSE-SU-2026:21016-1
Rating: moderate
References:

  * bsc#1263892
  * bsc#1263893
  * bsc#1263894
  * bsc#1263895
  * bsc#1263896
  * bsc#1263897
  * bsc#1264047



Cross-References:

  * CVE-2026-43859
  * CVE-2026-43860
  * CVE-2026-43861
  * CVE-2026-43862
  * CVE-2026-43863
  * CVE-2026-43864



CVSS scores:

  * CVE-2026-43859 ( SUSE ): 4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
  * CVE-2026-43859 ( SUSE ): 6.3 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-43860 ( SUSE ): 4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
  * CVE-2026-43860 ( SUSE ): 6.3 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-43861 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
  * CVE-2026-43861 ( SUSE ): 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-43862 ( SUSE ): 4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
  * CVE-2026-43862 ( SUSE ): 6.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-43863 ( SUSE ): 3.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
  * CVE-2026-43863 ( SUSE ): 4.8 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-43864 ( SUSE ): 2.5 CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
  * CVE-2026-43864 ( SUSE ): 2 CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Affected Products:

         openSUSE Leap 16.0

-------------------------------------------------------------

An update that solves 6 vulnerabilities and has 7 bug fixes can now be installed.

Description:

This update for mutt fixes the following issues

- CVE-2026-43859: `strfcpy` used instead of `memcpy` for the IMAP `auth_cram` MD5 digest
(bsc#1263897).
- CVE-2026-43860: truncation of `hash_passwd` by one byte for IMAP `auth_cram` MD5 digest
(bsc#1263896).
- CVE-2026-43861: missing check for `\0` in `url_pct_decode` (bsc#1263895).
- CVE-2026-43862: mishandling of the `imap_auth_gss` security level (bsc#1263894).
- CVE-2026-43863: infinite loop in `data_object_to_stream` in `crypt-gpgme.c` (bsc#1263893).
- CVE-2026-43864: NULL pointer dereference in function `show_sig_summary` (bsc#1263892).


Patch instructions:

   To install this openSUSE security update use the suse recommended installation methods
   like YaST online_update or "zypper patch".
   Alternatively you can run the command listed for your product:

- openSUSE Leap 16.0

   zypper in -t patch openSUSE-Leap-16.0-1028=1

Package List:

- openSUSE Leap 16.0:

  mutt-2.2.16-160000.2.1
  mutt-doc-2.2.16-160000.2.1
  mutt-lang-2.2.16-160000.2.1

References:

  * https://www.suse.com/security/cve/CVE-2026-43859.html
  * https://www.suse.com/security/cve/CVE-2026-43860.html
  * https://www.suse.com/security/cve/CVE-2026-43861.html
  * https://www.suse.com/security/cve/CVE-2026-43862.html
  * https://www.suse.com/security/cve/CVE-2026-43863.html
  * https://www.suse.com/security/cve/CVE-2026-43864.html