chore: Pin haskell-actions/setup to full commit SHA#19
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Pin third-party GitHub Action to a full commit SHA for improved supply chain security. ## Changes - Replace `haskell-actions/setup@v2` with `haskell-actions/setup@ec49483bfc012387b227434aba37f03a6e8ba9ed` - Add version comment (`# v2`) to maintain visibility of the intended version ## Why Pinning to a full commit SHA is the only way to use a GitHub Action as an immutable release. Version tags like `v2` can be moved by repository maintainers, potentially introducing malicious code. A full SHA pin ensures the exact same code runs on every workflow execution, mitigating supply chain attacks since an attacker would need to generate a SHA-1 collision for a valid Git object payload. ## Semgrep Finding Details An action sourced from a third-party repository on GitHub is not pinned to a full length commit SHA. Pinning an action to a full length commit SHA is currently the only way to use an action as an immutable release. Pinning to a particular SHA helps mitigate the risk of a bad actor adding a backdoor to the action's repository, as they would need to generate a SHA-1 collision for a valid Git object payload. @pkaeding@launchdarkly.com requested Semgrep Assistant generate this pull request to fix [a finding](https://semgrep.dev/orgs/launchdarkly/findings/726904704).
keelerm84
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Mar 20, 2026
keelerm84
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keelerm84
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Mar 23, 2026
pkaeding
approved these changes
Mar 27, 2026
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Pin third-party GitHub Action to a full commit SHA for improved supply chain security.
Changes
haskell-actions/setup@v2withhaskell-actions/setup@ec49483bfc012387b227434aba37f03a6e8ba9ed# v2) to maintain visibility of the intended versionWhy
Pinning to a full commit SHA is the only way to use a GitHub Action as an immutable release. Version tags like
v2can be moved by repository maintainers, potentially introducing malicious code. A full SHA pin ensures the exact same code runs on every workflow execution, mitigating supply chain attacks since an attacker would need to generate a SHA-1 collision for a valid Git object payload.Semgrep Finding Details
An action sourced from a third-party repository on GitHub is not pinned to a full length commit SHA. Pinning an action to a full length commit SHA is currently the only way to use an action as an immutable release. Pinning to a particular SHA helps mitigate the risk of a bad actor adding a backdoor to the action's repository, as they would need to generate a SHA-1 collision for a valid Git object payload.
@pkaeding@launchdarkly.com requested Semgrep Assistant generate this pull request to fix a finding.