SUSE-SU-2026:22050-1

Vulnerability from csaf_suse - Published: 2026-06-08 14:14 - Updated: 2026-06-08 14:14
Summary
Security update for elemental-register
Severity
Important
Notes
Title of the patch: Security update for elemental-register
Description of the patch: This update for elemental-register 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#1260277). Changes: - Update to v1.9.2: * 71d1fb9c Local node labels (#984) * ce6acda9 Bump golang.org/x/net to v0.55.0 includes fixes for: - bsc#1266789 bsc#1265921 bsc#1267197 bsc#1267168 bsc#1251679 * 060958b7 Bump golangci/golangci-lint-action * 3b4b6699 use a real UUID for the machine registration ID * d33faa01 Bump google.golang.org/grpc library (bsc#1260277 CVE-2026-33186) * 6dceb411 Deterministic endpoints for MachineRegistrations (#975) - Update to v1.9.1: * b42116d4 Ensure the machine inventory selector keeps looking for a match - Update to v1.9.0: - Update to v1.9.0-rc1: * 9952ebe1 Update libraries based on dependency scan * 5e128c5d Adapt OBS packages to a 1.9 version to coexist with 1.8 version * f88219af Fix cluster api version in test environment * ad937279 Run 'make generate' to recreate generated code and vendor folder * 15bb505f Bump to cluster API libraries to v1.12.x * 63369022 Bump test environment tools in Makefile * 7b464802 Run 'make vendor' to recreate vendor folder * 879b3464 Bump yip * aeda10ac Fix unit tests after bumping libraries * 33dcb61a Run 'make vendor' to recreate vendor folder * 0ccd96af Bump wrangler from v2 to v3 * ff0190c4 Run 'make generate' to renew all generated code and config files * b28d2f08 Bump controller generator to version 0.19 * 0bf7dc32 Update controller runtime options * 549e720d Run 'make vendor' to recreate vendor folder * 3f0f27e0 Updated cluster-api, steve, rancher/apis, client-go and k8s/api to the level they were at rancher v2.13 * 49ebf0b7 Update headers to 2026 * fd13ba92 Update questions to include SL Micro 6.2
Patchnames: SUSE-SL-Micro-6.2-902
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
CVE-2026-33186
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Micro 6.2:elemental-register-1.9.2-160000.1.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.2:elemental-register-1.9.2-160000.1.1.x86_64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.2:elemental-support-1.9.2-160000.1.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.2:elemental-support-1.9.2-160000.1.1.x86_64 —
Vendor Fix
Threats
Impact important
References
To clipboard 

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    "distribution": {
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        "text": "Security update for elemental-register",
        "title": "Title of the patch"
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        "text": "This update for elemental-register fixes the following issue\n\n- CVE-2026-33186: google.golang.org/grpc: authorization bypass due to improper validation of the HTTP/2: path pseudo-\n  header (bsc#1260277).\n\nChanges:\n\n- Update to v1.9.2:\n * 71d1fb9c Local node labels (#984)\n * ce6acda9 Bump golang.org/x/net to v0.55.0 includes fixes for:\n - bsc#1266789 bsc#1265921 bsc#1267197 bsc#1267168 bsc#1251679\n * 060958b7 Bump golangci/golangci-lint-action\n * 3b4b6699 use a real UUID for the machine registration ID\n * d33faa01 Bump google.golang.org/grpc library (bsc#1260277 CVE-2026-33186)\n * 6dceb411 Deterministic endpoints for MachineRegistrations (#975)\n- Update to v1.9.1:\n * b42116d4 Ensure the machine inventory selector keeps looking for a match\n- Update to v1.9.0:\n- Update to v1.9.0-rc1:\n * 9952ebe1 Update libraries based on dependency scan\n * 5e128c5d Adapt OBS packages to a 1.9 version to coexist with 1.8 version\n * f88219af Fix cluster api version in test environment\n * ad937279 Run \u0027make generate\u0027 to recreate generated code and vendor folder\n * 15bb505f Bump to cluster API libraries to v1.12.x\n * 63369022 Bump test environment tools in Makefile\n * 7b464802 Run \u0027make vendor\u0027 to recreate vendor folder\n * 879b3464 Bump yip\n * aeda10ac Fix unit tests after bumping libraries\n * 33dcb61a Run \u0027make vendor\u0027 to recreate vendor folder\n * 0ccd96af Bump wrangler from v2 to v3\n * ff0190c4 Run \u0027make generate\u0027 to renew all generated code and config files\n * b28d2f08 Bump controller generator to version 0.19\n * 0bf7dc32 Update controller runtime options\n * 549e720d Run \u0027make vendor\u0027 to recreate vendor folder\n * 3f0f27e0 Updated cluster-api, steve, rancher/apis, client-go and k8s/api\n to the level they were at rancher v2.13\n * 49ebf0b7 Update headers to 2026\n * fd13ba92 Update questions to include SL Micro 6.2\n",
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        "summary": "SUSE Bug 1260277",
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        "summary": "SUSE Bug 1265921",
        "url": "https://bugzilla.suse.com/1265921"
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        "category": "self",
        "summary": "SUSE Bug 1266789",
        "url": "https://bugzilla.suse.com/1266789"
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      {
        "category": "self",
        "summary": "SUSE Bug 1267168",
        "url": "https://bugzilla.suse.com/1267168"
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      {
        "category": "self",
        "summary": "SUSE Bug 1267197",
        "url": "https://bugzilla.suse.com/1267197"
      },
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        "summary": "SUSE CVE CVE-2026-33186 page",
        "url": "https://www.suse.com/security/cve/CVE-2026-33186/"
      }
    ],
    "title": "Security update for elemental-register",
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  "product_tree": {
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      {
        "branches": [
          {
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                "name": "elemental-register-1.9.2-160000.1.1.aarch64",
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  "vulnerabilities": [
    {
      "cve": "CVE-2026-33186",
      "ids": [
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          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-33186"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "gRPC-Go is the Go language implementation of gRPC. Versions prior to 1.79.3 have an authorization bypass resulting from improper input validation of the HTTP/2 `:path` pseudo-header. The gRPC-Go server was too lenient in its routing logic, accepting requests where the `:path` omitted the mandatory leading slash (e.g., `Service/Method` instead of `/Service/Method`). While the server successfully routed these requests to the correct handler, authorization interceptors (including the official `grpc/authz` package) evaluated the raw, non-canonical path string. Consequently, \"deny\" rules defined using canonical paths (starting with `/`) failed to match the incoming request, allowing it to bypass the policy if a fallback \"allow\" rule was present. This affects gRPC-Go servers that use path-based authorization interceptors, such as the official RBAC implementation in `google.golang.org/grpc/authz` or custom interceptors relying on `info.FullMethod` or `grpc.Method(ctx)`; AND that have a security policy contains specific \"deny\" rules for canonical paths but allows other requests by default (a fallback \"allow\" rule). The vulnerability is exploitable by an attacker who can send raw HTTP/2 frames with malformed `:path` headers directly to the gRPC server. The fix in version 1.79.3 ensures that any request with a `:path` that does not start with a leading slash is immediately rejected with a `codes.Unimplemented` error, preventing it from reaching authorization interceptors or handlers with a non-canonical path string. While upgrading is the most secure and recommended path, users can mitigate the vulnerability using one of the following methods: Use a validating interceptor (recommended mitigation); infrastructure-level normalization; and/or policy hardening.",
          "title": "CVE description"
        }
      ],
      "product_status": {
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          "SUSE Linux Micro 6.2:elemental-support-1.9.2-160000.1.1.aarch64",
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          "summary": "CVE-2026-33186",
          "url": "https://www.suse.com/security/cve/CVE-2026-33186"
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        {
          "category": "external",
          "summary": "SUSE Bug 1260085 for CVE-2026-33186",
          "url": "https://bugzilla.suse.com/1260085"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Micro 6.2:elemental-register-1.9.2-160000.1.1.aarch64",
            "SUSE Linux Micro 6.2:elemental-register-1.9.2-160000.1.1.x86_64",
            "SUSE Linux Micro 6.2:elemental-support-1.9.2-160000.1.1.aarch64",
            "SUSE Linux Micro 6.2:elemental-support-1.9.2-160000.1.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.2:elemental-register-1.9.2-160000.1.1.aarch64",
            "SUSE Linux Micro 6.2:elemental-register-1.9.2-160000.1.1.x86_64",
            "SUSE Linux Micro 6.2:elemental-support-1.9.2-160000.1.1.aarch64",
            "SUSE Linux Micro 6.2:elemental-support-1.9.2-160000.1.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-06-08T14:14:10Z",
          "details": "important"
        }
      ],
      "title": "CVE-2026-33186"
    }
  ]
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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