chore(ci): pin every action to a commit SHA - #4
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… permissions floor A tag is a moving pointer. Anyone who can move it - the action author, or anyone who compromises their account - runs code in this workflow with whatever the job has in scope. A commit SHA cannot be moved. Every uses: in this repo now pins a SHA with the tag kept as a trailing comment, which is the form Dependabot reads, so updates still arrive as pull requests rather than silently. Where a workflow had no top-level permissions: block it now declares contents: read. Jobs that need more still declare their own and override it. The org default is already read, but a default is a setting somebody can widen and a written floor is not.
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Mechanical hardening, no behaviour change.
Every
uses:is pinned to a commit SHA, with the tag kept as a trailing comment. A tag is a moving pointer: whoever can move it - the action author, or anyone who compromises their account - runs code in this workflow with whatever the job has in scope. A SHA cannot be moved. The trailing comment is the form Dependabot reads, so updates still arrive as pull requests rather than silently.Any workflow without a top-level
permissions:block now declarescontents: read. Jobs needing more still declare their own and override it. The org default is alreadyread, but a default is a setting somebody can widen and a written floor is not.Part of an estate-wide pass across all
dbhq-ukrepos on 16 Sep 2026. All 47 workflows were re-parsed as YAML after the change.