[jerome-benoit]

PR Checklist

• Title follows conventional commits.
• Changes are described below.
• Regression tests are included.
• No new feature documentation is required.
• Linked to the upstream security advisory below.

Does this PR introduce a breaking change?

• No

Security impact

This port is affected on Bun: inherited worker launch options can reach executable options such as preload and execArgv after prototype pollution. Deno permission dictionaries can also consume inherited authority fields.

Upstream references:

• GHSA-wf84-chhg-7w2g
• poolifier security fix

Changes

• forward only own worker launch options and rebuild launch dictionaries without prototypes;
• preserve explicit runtime options, including non-enumerable Bun environment and Deno permission restrictions;
• normalize Bun argv, execArgv, preload, and transferList arrays without inherited slots;
• normalize nested Deno permission dictionaries and arrays from own properties;
• restore pool startup flags when worker construction fails;
• cover fixed, dynamic, descriptor, nested, sparse-array, and startup-recovery paths.

Verification

• deno task format:check
• deno task lint
• deno task test:coverage — 260 steps passed
• deno task coverage:report
• deno task bundle
• Bun exploit smoke: inherited options, preload, execArgv, and parent environment values do not reach the worker.

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-14T23:30:00.369728Z	80ca2e2	New commits

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Codex reacts with 👀 while any review is running, comments if it has suggestions, and reacts with 👍 once all reviews finish with no findings.

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: bbf7e5e684

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
93.9% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud