Security update for dovecot22

Announcement ID:	SUSE-SU-2026:1641-1
Release Date:	2026-04-28T11:53:50Z
Rating:	important
References:	bsc#1260895 bsc#1260897 bsc#1260898 bsc#1260899 bsc#1260900 bsc#1260901 bsc#1260902
Cross-References:	CVE-2025-59031 CVE-2025-59032 CVE-2026-27855 CVE-2026-27856 CVE-2026-27857 CVE-2026-27858 CVE-2026-27859
CVSS scores:	CVE-2025-59031 ( SUSE ): 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N CVE-2025-59031 ( SUSE ): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVE-2025-59031 ( NVD ): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVE-2025-59032 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVE-2025-59032 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2025-59032 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2026-27855 ( SUSE ): 7.6 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVE-2026-27855 ( SUSE ): 6.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N CVE-2026-27855 ( NVD ): 6.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N CVE-2026-27856 ( SUSE ): 9.1 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVE-2026-27856 ( SUSE ): 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVE-2026-27856 ( NVD ): 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVE-2026-27857 ( SUSE ): 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVE-2026-27857 ( SUSE ): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L CVE-2026-27857 ( NVD ): 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L CVE-2026-27858 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVE-2026-27858 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2026-27858 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2026-27859 ( SUSE ): 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVE-2026-27859 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVE-2026-27859 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected Products:	SUSE Linux Enterprise High Performance Computing 12 SP5 SUSE Linux Enterprise Server 12 SP5 SUSE Linux Enterprise Server 12 SP5 LTSS SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security SUSE Linux Enterprise Server for SAP Applications 12 SP5

An update that solves seven vulnerabilities can now be installed.

Description:

This update for dovecot22 fixes the following issues:

• CVE-2025-59031: decode2text.sh OOXML extraction may follow symlinks and read unintended files during indexing (bsc#1260895).
• CVE-2025-59032: pigeonhole: ManageSieve panic occurs with sieve-connect as a client (bsc#1260902).
• CVE-2026-27855: OTP driver vulnerable to replay attack (bsc#1260900).
• CVE-2026-27856: Doveadm credentials were not checked using timing-safe checking function (bsc#1260899).
• CVE-2026-27857: sending excessive parenthesis causes imap-login to use excessive memory (bsc#1260898).
• CVE-2026-27858: pigeonhole: managesieve-login can allocate large amount of memory during authentication (bsc#1260901).
• CVE-2026-27859: excessive RFC 2231 MIME parameters in email would can excessive CPU usage (bsc#1260897).

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
  zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-2026-1641=1
• SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
  zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-1641=1

Package List:

• SUSE Linux Enterprise Server 12 SP5 LTSS (aarch64 ppc64le s390x x86_64)
  • dovecot22-backend-pgsql-debuginfo-2.2.31-19.32.1
  • dovecot22-debugsource-2.2.31-19.32.1
  • dovecot22-backend-sqlite-debuginfo-2.2.31-19.32.1
  • dovecot22-backend-mysql-debuginfo-2.2.31-19.32.1
  • dovecot22-backend-pgsql-2.2.31-19.32.1
  • dovecot22-debuginfo-2.2.31-19.32.1
  • dovecot22-2.2.31-19.32.1
  • dovecot22-devel-2.2.31-19.32.1
  • dovecot22-backend-sqlite-2.2.31-19.32.1
  • dovecot22-backend-mysql-2.2.31-19.32.1
• SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64)
  • dovecot22-backend-pgsql-debuginfo-2.2.31-19.32.1
  • dovecot22-debugsource-2.2.31-19.32.1
  • dovecot22-backend-sqlite-debuginfo-2.2.31-19.32.1
  • dovecot22-backend-mysql-debuginfo-2.2.31-19.32.1
  • dovecot22-backend-pgsql-2.2.31-19.32.1
  • dovecot22-debuginfo-2.2.31-19.32.1
  • dovecot22-2.2.31-19.32.1
  • dovecot22-devel-2.2.31-19.32.1
  • dovecot22-backend-sqlite-2.2.31-19.32.1
  • dovecot22-backend-mysql-2.2.31-19.32.1

References:

• https://www.suse.com/security/cve/CVE-2025-59031.html
• https://www.suse.com/security/cve/CVE-2025-59032.html
• https://www.suse.com/security/cve/CVE-2026-27855.html
• https://www.suse.com/security/cve/CVE-2026-27856.html
• https://www.suse.com/security/cve/CVE-2026-27857.html
• https://www.suse.com/security/cve/CVE-2026-27858.html
• https://www.suse.com/security/cve/CVE-2026-27859.html
• https://bugzilla.suse.com/show_bug.cgi?id=1260895
• https://bugzilla.suse.com/show_bug.cgi?id=1260897
• https://bugzilla.suse.com/show_bug.cgi?id=1260898
• https://bugzilla.suse.com/show_bug.cgi?id=1260899
• https://bugzilla.suse.com/show_bug.cgi?id=1260900
• https://bugzilla.suse.com/show_bug.cgi?id=1260901
• https://bugzilla.suse.com/show_bug.cgi?id=1260902