Security update for mutt

Announcement ID: SUSE-SU-2026:2300-1
Release Date: 2026-06-08T13:54:59Z
Rating: moderate
References:
Cross-References:
CVSS scores:
  • 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-2026-43859 ( 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 ( NVD ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/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-2026-43860 ( 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 ( NVD ): 3.7 CVSS:3.1/AV:N/AC:H/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-2026-43861 ( 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 ( NVD ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/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-2026-43862 ( 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 ( NVD ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
  • 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-2026-43863 ( 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 ( NVD ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
  • CVE-2026-43864 ( SUSE ): 2.0 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
  • 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 ( NVD ): 2.5 CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
Affected Products:
  • SUSE Linux Enterprise Server 12 SP5
  • SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
  • SUSE Linux Enterprise Server for SAP Applications 12 SP5

An update that solves six vulnerabilities and has one security fix 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 SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  • SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-2300=1

Package List:

  • SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64)
    • mutt-1.10.1-55.33.1
    • mutt-debuginfo-1.10.1-55.33.1
    • mutt-debugsource-1.10.1-55.33.1

References: