grpc-gateway v2.28.0 is vulnerable to Incorrect Access Control. The application processes the X-HTTP-Method-Override header in ServeMux.ServeHTTP without restricting allowed methods. When a POST request with Content-Type application/x-www-form-urlencoded includes this header, the request method is rewritten to an arbitrary attacker-supplied value before routing. This allows bypassing method-based access controls enforced by upstream proxies or WAFs.

suse_linux SUSE-SU-2026:4045-1: SUSE SLES15 : Security update for amazon-cloudwatch-agent (Moderate) (SUSE-SU-2026:4045-1)

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4175-1 advisory.

    - 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#1277949).
    - CVE-2026-41178: go.opentelemetry.io/otel/baggage: no rejection of raw-length headers in baggage parsing     allows for DoS       via oversized inputs (bsc#1276644).
    - 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#1278270).
    - CVE-2026-84304: github.com/grpc/grpc-go: heap memory exhaustion via HTTP/2 DATA frame fragmentation     (bsc#1278273).
    - CVE-2026-84445: google.golang.org/grpc: DoS via crash due to missing `:authority` and `Host` headers in     gRPC-Go xDS       servers (bsc#1278688).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21801-1 advisory.

    - CVE-2026-24122: github.com/sigstore/cosign/v2/pkg/cosign: improper validation of certificates that     outlive expired CA       certificates (bsc#1258543).
    - 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#1278002).
    - CVE-2026-41178: go.opentelemetry.io/otel/baggage, go.opentelemetry.io/otel/propagation: no rejection of     raw-length       headers in baggage parsing allows for DoS via oversized inputs (bsc#1276745).
    - CVE-2026-50163: oras-go: Information disclosure and arbitrary file access via crafted tarball hardlinks     (bsc#1278702).
    - CVE-2026-56854,CVE-2026-56855,CVE-2026-78662: golang.org/x/crypto/ssh: authentication bypass and     deadlocks in the       crypto/ssh library (bsc#1278624).
    - 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#1279390).
    - CVE-2026-84304: github.com/grpc/grpc-go: heap memory exhaustion via HTTP/2 DATA frame fragmentation     (bsc#1279395).
    - CVE-2026-84445: google.golang.org/grpc: DoS via crash due to missing `:authority` and `Host` headers in     gRPC-Go xDS       servers (bsc#1279392).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21809-1 advisory.

    Update to version 3.21.1:

    - 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#1277949).
    - CVE-2026-41178: go.opentelemetry.io/otel/baggage: no rejection of raw-length headers in baggage parsing     allows for DoS       via oversized inputs (bsc#1276644).
    - CVE-2026-48978: oras.land/oras-go/v2/registry/remote/auth: Malicious registry can hijack Bearer token     realm to       exfiltrate credentials and refresh tokens (bsc#1270127).
    - CVE-2026-50151: oras-go: Credential forwarding via unvalidated Location header during blob upload     (bsc#1271660).
    - CVE-2026-63308: processing zero-length byte slices in template chart files can trigger an index out-of-     range panic       (bsc#1272402).
    - 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#1278270).
    - CVE-2026-84304: github.com/grpc/grpc-go: heap memory exhaustion via HTTP/2 DATA frame fragmentation     (bsc#1278273).
    - CVE-2026-84445: google.golang.org/grpc: DoS via crash due to missing `:authority` and `Host` headers in     gRPC-Go xDS       servers (bsc#1278688).
    - gRPC-Go: several issues affecting the xDS RBAC authorization engine and the HTTP/2 transport server     implementation       (bsc#1276514).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21793-1 advisory.

    Changes in hauler:

    - update to 2.1.0 (bsc#1265425, CVE-2026-41888):
      * `v2.1.0` is a **minor** release built on the containerd-         native foundation laid down in `v2.0.0`. The headline is that         `hauler store sync` and `hauler store add` are now fully         concurrent, with signature verification pinned to digests and         running in parallel too. Alongside that, this release adds an         audit trail, a store integrity checker, store-to-manifest         generation, private/insecure registry support across every         pull path, and a set of fixes for containerd imports, chunked         hauls, and Docker Hub reference handling.
      * **Notable dependency bumps:** Go  **1.26.6**;
        `containerd/v2`  2.3.4; `sigstore/cosign/v3`  3.1.3;
        `sigstore/sigstore`  1.10.9; `go-containerregistry`         0.22.0; `helm/v4`  4.2.4; `k8s.io` libs (apimachinery, api,         client-go)  0.37.0; `logrus`  1.10.2; `docker/go-metrics`         0.1.0; `sigstore/rekor`  1.5.4 (CVE resolution); plus         `x/mod` and `go-isatty`.

    - update to 2.0.3 (bsc#1276124,       CVE-2026-72817,CVE-2026-72815,CVE-2026-72816):
      * Bump k8s.io/apimachinery from 0.36.2 to 0.36.3 (backport         #688)
      * Bump oras.land/oras-go/v2 from 2.6.1 to 2.6.2 in the         go_modules group across 1 directory (backport #691)
      * fix for homebrew macOS binary quarantine (backport #690)
      * fix: process Helm deps before --add-images discovery         (backport #703)
      * update hauler store remove to handle registry reference as         part of string (backport #705)
      * fixed vuln for golang grpc

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - grpc-gateway v2.28.0 is vulnerable to Incorrect Access Control. The application processes the X-HTTP-     Method-Override header in ServeMux.ServeHTTP without restricting allowed methods. When a POST request with     Content-Type application/x-www-form-urlencoded includes this header, the request method is rewritten to an     arbitrary attacker-supplied value before routing. This allows bypassing method-based access controls     enforced by upstream proxies or WAFs. (CVE-2026-37236)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
346217	SUSE SLES15: helm / helm-bash-completion / helm-fish-completion / etc (SUSE-SU-2026:4175-1)	Nessus	SuSE Local Security Checks	Local	high
344683	openSUSE 16 Security Update : trivy (openSUSE-SU-2026:21801-1)	Nessus	SuSE Local Security Checks	Local	high
344664	openSUSE 16: helm / helm-bash-completion / helm-fish-completion / etc (openSUSE-SU-2026:21809-1)	Nessus	SuSE Local Security Checks	Local	high
343950	openSUSE 16 Security Update : hauler (openSUSE-SU-2026:21793-1)	Nessus	SuSE Local Security Checks	Local	medium
341562	Linux Distros Unpatched Vulnerability : CVE-2026-37236	Nessus	Misc.	Local	critical

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