[release-4.14] 🐛 OCPBUGS-102489: replace golang.org/x/net with openshift-sustaining/net v0.35.0-sec.4 for CVE-2026-33814

[amitesh1201]

Summary

• CVE: CVE-2026-33814 — HTTP/2 DoS via malformed SETTINGS_MAX_FRAME_SIZE=0
• Jira: https://issues.redhat.com/browse/OCPBUGS-102489
• Package: golang.org/x/net → github.com/openshift-sustaining/net v0.35.0-sec.4
• Risk: MEDIUM — http2 Transport via client-go; requires compromised API server

Go version constraint: upstream fix (>= v0.53.0) requires go 1.25; mitigated via backport fork replace.
Fix upstream: https://go.dev/cl/761640

Note: v0.35.0-sec.4 also includes CVE-2026-27136 html tokenization fix (https://go.dev/cl/781685).

Changes

• go.mod + hack/tools/go.mod: replace directive for golang.org/x/net
• go.sum + hack/tools/go.sum: updated checksums
• vendor/ + hack/tools/vendor/: patched golang.org/x/net/http2 and transitive deps

Test Plan

• go build -mod=vendor ./... succeeds (Go 1.20)
• grep "^go " go.mod unchanged (go 1.19)
• make test passes

[openshift-merge-bot]

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[openshift-ci-robot]

@amitesh1201: This pull request references Jira Issue OCPBUGS-102489, which is invalid:

• expected Jira Issue OCPBUGS-102489 to depend on a bug targeting a version in 4.15.0, 4.15.z and in one of the following states: VERIFIED, RELEASE PENDING, CLOSED (ERRATA), CLOSED (CURRENT RELEASE), CLOSED (DONE), CLOSED (DONE-ERRATA), but no dependents were found

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

The bug has been updated to refer to the pull request using the external bug tracker.

Details

In response to this:

Summary

• CVE: CVE-2026-33814 — HTTP/2 DoS via malformed SETTINGS_MAX_FRAME_SIZE=0
• Jira: https://issues.redhat.com/browse/OCPBUGS-102489
• Package: golang.org/x/net → github.com/openshift-sustaining/net v0.35.0-sec.3
• Risk: MEDIUM — http2 Transport via client-go; requires compromised API server

Go version constraint: upstream fix (>= v0.53.0) requires go 1.25; mitigated via backport fork replace.
Fix upstream: https://go.dev/cl/761640

Changes

• go.mod + hack/tools/go.mod: replace directive for golang.org/x/net
• go.sum + hack/tools/go.sum: updated checksums
• vendor/ + hack/tools/vendor/: patched golang.org/x/net/http2 and transitive deps

Test Plan

• go build -mod=vendor ./... succeeds
• grep "^go " go.mod unchanged (go 1.19)
• make test passes

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[openshift-ci]

@amitesh1201: all tests passed!

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