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fix: require Go 1.26.10 (GO-2026-6809, emSign x509 denylist) - #2
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…(GO-2026-6809) Go 1.26.10 / 1.27.3 add a crypto/x509 denylist of the leaked emSign intermediates (CVE-2026-111943), covering trust stores that are not updated.
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Raises the
godirective from1.26.2to1.26.10.Why: the private keys of several emSign intermediates have leaked (CVE-2026-111943). Go 1.26.10 and 1.27.3 add a denylist to
crypto/x509soVerifyrejects those intermediates even when the system trust store hasn't been updated (GO-2026-6809).CI and releases use
go-version-file: go.mod, so this also moves the toolchain that builds the releasedkubectl-nastybinaries from 1.26.2 to 1.26.10.Checks:
go mod tidy -diff,go build ./...,go vet ./...andgo test ./...pass locally on Go 1.27.3.