Security update for rmt-server

Announcement ID:	SUSE-SU-2026:2487-1
Release Date:	2026-06-22T12:08:32Z
Rating:	important
References:	bsc#1246976 bsc#1261388 bsc#1261398 bsc#1261406 bsc#1261417 bsc#1261426 bsc#1261436 bsc#1261447 bsc#1261458 bsc#1261466 bsc#1261471
Cross-References:	CVE-2026-26961 CVE-2026-26962 CVE-2026-34230 CVE-2026-34763 CVE-2026-34785 CVE-2026-34786 CVE-2026-34826 CVE-2026-34829 CVE-2026-34830 CVE-2026-34831
CVSS scores:	CVE-2026-26961 ( SUSE ): 6.3 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N CVE-2026-26961 ( SUSE ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N CVE-2026-26961 ( NVD ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N CVE-2026-26961 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CVE-2026-26962 ( SUSE ): 6.3 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N CVE-2026-26962 ( SUSE ): 4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N CVE-2026-26962 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVE-2026-26962 ( NVD ): 4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N CVE-2026-34230 ( 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-2026-34230 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVE-2026-34230 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2026-34230 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVE-2026-34763 ( 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-2026-34763 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVE-2026-34763 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVE-2026-34785 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N CVE-2026-34785 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVE-2026-34785 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVE-2026-34786 ( 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-2026-34786 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CVE-2026-34786 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CVE-2026-34826 ( 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-2026-34826 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVE-2026-34826 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2026-34826 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVE-2026-34829 ( 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-2026-34829 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2026-34829 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2026-34830 ( SUSE ): 8.2 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N CVE-2026-34830 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVE-2026-34830 ( NVD ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVE-2026-34830 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVE-2026-34831 ( SUSE ): 6.3 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N CVE-2026-34831 ( SUSE ): 4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N CVE-2026-34831 ( NVD ): 4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N CVE-2026-34831 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Affected Products:	openSUSE Leap 15.5 Public Cloud Module 15-SP5 Public Cloud Module 15-SP6 SUSE Linux Enterprise High Performance Computing 15 SP5 SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 SUSE Linux Enterprise Server 15 SP5 SUSE Linux Enterprise Server 15 SP5 LTSS SUSE Linux Enterprise Server 15 SP6 SUSE Linux Enterprise Server 15 SP6 LTSS SUSE Linux Enterprise Server for SAP Applications 15 SP5 SUSE Linux Enterprise Server for SAP Applications 15 SP6

An update that solves 10 vulnerabilities and has one security fix can now be installed.

Description:

This update for rmt-server fixes the following issues

• CVE-2026-26961: rack: mismatch in header handling can allow to smuggle multipart content (bsc#1261398).
• CVE-2026-26962: rack: improper unfolding of folded multipart headers can lead to header injection or response splitting (bsc#1261471).
• CVE-2026-34230: rack: crafted Accept-Encoding header can cause a denial of service (bsc#1261388).
• CVE-2026-34763: rack: failing of the prefix stripping can lead to information disclosure (bsc#1261406).
• CVE-2026-34785: rack: prefix matching can expose unintended files under the static root (bsc#1261417).
• CVE-2026-34786: rack: URL-encoded path mismatch can lead to header_rules bypass (bsc#1261426).
• CVE-2026-34826: rack: multipart byte range processing can allow denial of service (bsc#1261436).
• CVE-2026-34829: rack: multipart parsing without Content-Length header allows unbounded chunked file uploads (bsc#1261447).
• CVE-2026-34830: rack: crafted X-Accel-Mappingheaders can lead to regex injection (bsc#1261458).
• CVE-2026-34831: rack: Content-Length mismatch can lead to incorrectly framed error responses (bsc#1261466).

Changes for rmt-server:

• Updated to version 2.27

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 for SAP Applications 15 SP6
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-2487=1
• SUSE Linux Enterprise Server 15 SP5 LTSS
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-2487=1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-2487=1
• Public Cloud Module 15-SP5
  zypper in -t patch SUSE-SLE-Module-Public-Cloud-15-SP5-2026-2487=1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5
  zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-2487=1
• Public Cloud Module 15-SP6
  zypper in -t patch SUSE-SLE-Module-Public-Cloud-15-SP6-2026-2487=1
• openSUSE Leap 15.5
  zypper in -t patch SUSE-2026-2487=1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
  zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-2487=1
• SUSE Linux Enterprise Server 15 SP6 LTSS
  zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-2487=1

Package List:

• Public Cloud Module 15-SP5 (aarch64 ppc64le s390x x86_64)
  • rmt-server-debugsource-2.27-150500.3.47.1
  • rmt-server-debuginfo-2.27-150500.3.47.1
  • rmt-server-pubcloud-2.27-150500.3.47.1
• SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64)
  • rmt-server-2.27-150500.3.47.1
  • rmt-server-debuginfo-2.27-150500.3.47.1
  • rmt-server-config-2.27-150500.3.47.1
  • rmt-server-debugsource-2.27-150500.3.47.1
• openSUSE Leap 15.5 (aarch64 ppc64le s390x x86_64)
  • rmt-server-debugsource-2.27-150500.3.47.1
  • rmt-server-2.27-150500.3.47.1
  • rmt-server-config-2.27-150500.3.47.1
  • rmt-server-debuginfo-2.27-150500.3.47.1
  • rmt-server-pubcloud-2.27-150500.3.47.1
• Public Cloud Module 15-SP6 (aarch64 ppc64le s390x x86_64)
  • rmt-server-debugsource-2.27-150500.3.47.1
  • rmt-server-debuginfo-2.27-150500.3.47.1
  • rmt-server-pubcloud-2.27-150500.3.47.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP6 (ppc64le x86_64)
  • rmt-server-debugsource-2.27-150500.3.47.1
  • rmt-server-2.27-150500.3.47.1
  • rmt-server-debuginfo-2.27-150500.3.47.1
  • rmt-server-config-2.27-150500.3.47.1
• SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64 x86_64)
  • rmt-server-debugsource-2.27-150500.3.47.1
  • rmt-server-2.27-150500.3.47.1
  • rmt-server-debuginfo-2.27-150500.3.47.1
  • rmt-server-config-2.27-150500.3.47.1
• SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64 x86_64)
  • rmt-server-2.27-150500.3.47.1
  • rmt-server-debuginfo-2.27-150500.3.47.1
  • rmt-server-config-2.27-150500.3.47.1
  • rmt-server-debugsource-2.27-150500.3.47.1
• SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64)
  • rmt-server-2.27-150500.3.47.1
  • rmt-server-debuginfo-2.27-150500.3.47.1
  • rmt-server-config-2.27-150500.3.47.1
  • rmt-server-debugsource-2.27-150500.3.47.1
• SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64)
  • rmt-server-2.27-150500.3.47.1
  • rmt-server-debuginfo-2.27-150500.3.47.1
  • rmt-server-config-2.27-150500.3.47.1
  • rmt-server-debugsource-2.27-150500.3.47.1

References:

• https://www.suse.com/security/cve/CVE-2026-26961.html
• https://www.suse.com/security/cve/CVE-2026-26962.html
• https://www.suse.com/security/cve/CVE-2026-34230.html
• https://www.suse.com/security/cve/CVE-2026-34763.html
• https://www.suse.com/security/cve/CVE-2026-34785.html
• https://www.suse.com/security/cve/CVE-2026-34786.html
• https://www.suse.com/security/cve/CVE-2026-34826.html
• https://www.suse.com/security/cve/CVE-2026-34829.html
• https://www.suse.com/security/cve/CVE-2026-34830.html
• https://www.suse.com/security/cve/CVE-2026-34831.html
• https://bugzilla.suse.com/show_bug.cgi?id=1246976
• https://bugzilla.suse.com/show_bug.cgi?id=1261388
• https://bugzilla.suse.com/show_bug.cgi?id=1261398
• https://bugzilla.suse.com/show_bug.cgi?id=1261406
• https://bugzilla.suse.com/show_bug.cgi?id=1261417
• https://bugzilla.suse.com/show_bug.cgi?id=1261426
• https://bugzilla.suse.com/show_bug.cgi?id=1261436
• https://bugzilla.suse.com/show_bug.cgi?id=1261447
• https://bugzilla.suse.com/show_bug.cgi?id=1261458
• https://bugzilla.suse.com/show_bug.cgi?id=1261466
• https://bugzilla.suse.com/show_bug.cgi?id=1261471