SUSE-SU-2026:23852-1: important: Security update for distribution

Thu Sep 24 20:44:07 UTC 2026

# Security update for distribution

Announcement ID: SUSE-SU-2026:23852-1  
Release Date: 2026-09-21T12:26:04Z  
Rating: important  
References:

  * bsc#1268884
  * bsc#1276677
  * bsc#1277966
  * bsc#1278997
  * bsc#1279219
  * bsc#1279316

Cross-References:

  * CVE-2026-37236
  * CVE-2026-39827
  * CVE-2026-41178
  * CVE-2026-84303
  * CVE-2026-84304
  * CVE-2026-84445

CVSS scores:

  * CVE-2026-37236 ( 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-2026-37236 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
  * CVE-2026-37236 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-39827 ( SUSE ):  7.1
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-39827 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-39827 ( NVD ):  6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-41178 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-41178 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-84303 ( SUSE ):  9.1
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-84303 ( SUSE ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-84303 ( NVD ):  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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  * CVE-2026-84304 ( 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-2026-84304 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-84304 ( NVD ):  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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  * CVE-2026-84445 ( 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-2026-84445 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-84445 ( NVD ):  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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected Products:

  * SUSE Linux Enterprise Server 16.0

An update that solves six vulnerabilities can now be installed.

## Description:

This update for distribution fixes the following issues:

  * CVE-2026-37236: github.com/grpc-ecosystem/grpc-gateway/v2/runtime: client
    can override the HTTP method of a POST request through the X-HTTP-Method-
    Override header and bypass established access control (bsc#1277966).
  * CVE-2026-41178: go.opentelemetry.io/otel/baggage: no rejection of raw-length
    headers in baggage parsing allows for DoS via oversized inputs
    (bsc#1276677).
  * CVE-2026-84303: github.com/grpc/grpc-go: xDS RBAC HTTP filter implementation
    issue allows for bypass of authorization policies via mixed-case or
    canonical-case header matches (bsc#1279316).
  * CVE-2026-84304: github.com/grpc/grpc-go: heap memory exhaustion via HTTP/2
    DATA frame fragmentation (bsc#1279219).
  * CVE-2026-84445: google.golang.org/grpc: DoS via crash due to missing
    `:authority` and `Host` headers in gRPC-Go xDS servers (bsc#1278997).
  * CVE-2026-41178: go.opentelemetry.io/otel/baggage: no rejection of raw-length
    headers in baggage parsing allows for DoS via oversized inputs
    (bsc#1276677).
  * CVE-2026-84303: google.golang.org/grpc: xDS RBAC HTTP filter implementation
    issue allows for bypass of authorization policies via mixed-case or
    canonical-case header matches (bsc#1279316).
  * CVE-2026-84304: google.golang.org/grpc: heap memory exhaustion via HTTP/2
    DATA frame fragmentation (bsc#1279219).
  * CVE-2026-84445: google.golang.org/grpc: DoS via crash due to missing
    ':authority' and 'Host' headers in gRPC-Go xDS servers (bsc#1278997).

## 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 16.0  
    zypper in -t patch SUSE-SLES-16.0-1726

## Package List:

  * SUSE Linux Enterprise Server 16.0 (aarch64 ppc64le s390x x86_64)
    * distribution-registry-3.1.1-160000.3.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-37236.html
  * https://www.suse.com/security/cve/CVE-2026-39827.html
  * https://www.suse.com/security/cve/CVE-2026-41178.html
  * https://www.suse.com/security/cve/CVE-2026-84303.html
  * https://www.suse.com/security/cve/CVE-2026-84304.html
  * https://www.suse.com/security/cve/CVE-2026-84445.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1268884
  * https://bugzilla.suse.com/show_bug.cgi?id=1276677
  * https://bugzilla.suse.com/show_bug.cgi?id=1277966
  * https://bugzilla.suse.com/show_bug.cgi?id=1278997
  * https://bugzilla.suse.com/show_bug.cgi?id=1279219
  * https://bugzilla.suse.com/show_bug.cgi?id=1279316

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