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Pass release version to shell via env, not interpolation (SEC-11868) - #178

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leonard-tesnov wants to merge 1 commit into
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sec/11868-workflow-shell-injection

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The publish job interpolated ${{ steps.version_check.outputs.version }} and ${{ steps.notes.outputs.notes }} directly into run: bodies. Actions substitutes those textually before the shell runs, so the values are parsed as shell source rather than read as data. The version comes from lib/gocardless_pro/version.rb and the notes from CHANGELOG.md.

Bind both through step-level env: so the shell reads them as data, and reject a version that is not plain semver at the point it is read.

Passing the notes via env: also preserves their line breaks, which the previous inline assignment did not.

Ref: SEC-11868

The publish job interpolated ${{ steps.version_check.outputs.version }}
and ${{ steps.notes.outputs.notes }} directly into `run:` bodies.
Actions substitutes those textually before the shell runs, so the values
are parsed as shell source rather than read as data. The version comes
from lib/gocardless_pro/version.rb and the notes from CHANGELOG.md.

Bind both through step-level `env:` so the shell reads them as data, and
reject a version that is not plain semver at the point it is read.

Passing the notes via `env:` also preserves their line breaks, which the
previous inline assignment did not.

Ref: SEC-11868

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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