RHSA-2026:91646HighCVSS 8.1

Red Hat Security Advisory: osbuild-composer security update

Published
October 28, 2026
Last Modified
November 3, 2026

🔗 CVE IDs covered (7)

CVE-2026-111943 →CVE-2026-78667 →CVE-2026-78669 →CVE-2026-84445 →CVE-2026-88031 →CVE-2026-94440 →CVE-2026-97031 →

📋 Description

CVE-2026-78667 — net/http: golang: golang: Denial of Service via crafted HTTP Range headers CVE-2026-78669 — net/http: net/http/internal/http2: golang.org/x/net/http2: net/http: Denial of Service via excessive HTTP/2 SETTINGS frames CVE-2026-84445 — google.golang.org/grpc: gRPC-Go: Denial of Service via malformed RPC requests CVE-2026-88031 — go.mongodb.org/mongo-driver: go.mongodb.org/mongo-driver/v2: MongoDB Go Driver: Data deletion via query-operator injection in GridFS file IDs CVE-2026-94440 — net/textproto: mime/multipart: golang: golang: Denial of Service via memory limit bypass in multipart form parsing CVE-2026-97031 — crypto/tls: golang: crypto/tls: Denial of Service via multiple ECH outer extension references CVE-2026-111943 — crypto/x509: golang: crypto/x509: Man-in-the-middle attacks via untrusted intermediate certificates

🎯 Affected products30

  • Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-0:134.1-13.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-0:134.1-13.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-0:134.1-13.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-0:134.1-13.el10_0.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-0:134.1-13.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-core-0:134.1-13.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-core-0:134.1-13.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-core-0:134.1-13.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-core-0:134.1-13.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-core-debuginfo-0:134.1-13.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-core-debuginfo-0:134.1-13.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-core-debuginfo-0:134.1-13.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-core-debuginfo-0:134.1-13.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-debugsource-0:134.1-13.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-debugsource-0:134.1-13.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-debugsource-0:134.1-13.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-debugsource-0:134.1-13.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-tests-debuginfo-0:134.1-13.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-tests-debuginfo-0:134.1-13.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-tests-debuginfo-0:134.1-13.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-tests-debuginfo-0:134.1-13.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-worker-0:134.1-13.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-worker-0:134.1-13.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-worker-0:134.1-13.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-worker-0:134.1-13.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-worker-debuginfo-0:134.1-13.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-worker-debuginfo-0:134.1-13.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-worker-debuginfo-0:134.1-13.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)
  • osbuild-composer-worker-debuginfo-0:134.1-13.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0)

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability. Workaround: In case you consume HTTP2, upgrade to a patched version of the http module. Verify: ``` go version go list -m golang.org/x/net govulncheck ./... ``` Workaround: If upgrading go.mongodb.org/mongo-driver to version 1.17.10 (v1) or 2.9.1 (v2) is not immediately possible, the following steps can reduce exposure: - Validate file identifiers before passing them to GridFS operations. Ensure that file IDs supplied by users or external systems are scalar values (e.g., primitive.ObjectID or string) and reject any structured BSON documents or maps. This prevents query operator injection. - Restrict who can supply GridFS file identifiers. Do not allow unauthenticated or low-privilege users to directly control the file ID parameter in GridFS API calls (Delete, OpenDownloadStream, DownloadToStream, etc.). Workaround: See the security bulletin for a detailed mitigation procedure.

🔗 References (10)