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SUSE Ignition Security Vulnerability - Authorization Bypass CVE-2026-33186

suse
Calendar Grey April 7, 2026
Dist Suse Esm H88
Update addresses an important issue in Ignition for SUSE Linux; fixes an authorization bypass vulnerability.
An update that solves one vulnerability can now be installed.

Summary

## This update for ignition fixes the following issue: * CVE-2026-33186: google.golang.org/grpc: authorization bypass due to improper validation of the HTTP/2: path pseudo- header (bsc#1260251) ## 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 Micro for Rancher 5.3 zypper in -t patch SUSE-SLE-Micro-5.3-2026-1197=1 * SUSE Linux Enterprise Micro 5.3 zypper in -t patch SUSE-SLE-Micro-5.3-2026-1197=1 ## Package List: * SUSE Linux Enterprise Micro for Rancher 5.3 (aarch64 s390x x86_64) * ignition-debuginfo-2.14.0-150400.4.15.1 * ignition-dracut-grub2-2.14.0-150400.4.15.1 * ignition-2.14.0-150400.4.15.1

Topics%20covered

Topics Covered

security advisory SuSE important installation authorization bypass ignition

References

* bsc#1260251

Cross-

* CVE-2026-33186

CVSS scores:

* 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

Affected Products:

* SUSE Linux Enterprise Micro 5.3

* SUSE Linux Enterprise Micro for Rancher 5.3

An update that solves one vulnerability can now be installed.

##

* https://www.suse.com/security/cve/CVE-2026-33186.html

* https://bugzilla.suse.com/show_bug.cgi?id=1260251

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:1197-1
Release Date: 2026-04-07T10:25:02Z
Rating: important

Topics%20covered

Topics Covered

security advisory SuSE important installation authorization bypass ignition

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