SUSE Google-Guest-Agent Significant Auth Bypass Security Patch 2026-23874

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## This update for google-guest-agent fixes the following issues: * CVE-2026-33186: google.golang.org/grpc: authorization bypass due to improper validation of the HTTP/2 :path pseudo- header (bsc#1260264). * CVE-2026-56854,CVE-2026-56855,CVE-2026-78662: golang.org/x/crypto/ssh: authentication bypass and deadlocks in the crypto/ssh library (bsc#1278597). ## 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 Micro 6.0 zypper in -t patch SUSE-SLE-Micro-6.0-906 ## Package List: * SUSE Linux Micro 6.0 (aarch64 s390x x86_64) * google-guest-agent-debuginfo-20260903.01-2.1 * google-guest-agent-20260903.01-2.1

## This update for google-guest-agent fixes the following issues: * CVE-2026-33186: google.golang.org/grpc: authorization bypass due to improper validation of the HTTP/2 :path pseudo- header (bsc#1260264). * CVE-2026-56854,CVE-2026-56855,CVE-2026-78662: golang.org/x/crypto/ssh: authentication bypass and deadlocks in the crypto/ssh library (bsc#1278597). ## 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 Micro 6.0 zypper in -t patch SUSE-SLE-Micro-6.0-906 ## Package List: * SUSE Linux Micro 6.0 (aarch64 s390x x86_64) * google-guest-agent-debuginfo-20260903.01-2.1 * google-guest-agent-20260903.01-2.1

* CVE-2026-33186 ( SUSE ): 8.6

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

* CVE-2026-33186 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

* CVE-2026-33186 ( NVD ): 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

* CVE-2026-33186 ( NVD ): 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

* CVE-2026-56854 ( SUSE ): 8.6

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

* CVE-2026-56854 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

* CVE-2026-56854 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

* CVE-2026-56855 ( SUSE ): 8.7

Announcement ID: SUSE-SU-2026:23874-1 Release Date: 2026-09-17T08:02:16Z Rating: important

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