fix(deps): patch transitive undici, fast-uri, brace-expansion, and cache advisories

[amanthanvi]

What

Raises the pnpm-workspace.yaml override pins that are now vulnerable, and adds floors for two packages:

Package	Before	After	Advisories	Path
undici	6.28.0	6.28.1	GHSA-rfgv-xxqx-mfg5 (high), GHSA-3wwx-pv8p-q78v, GHSA-r53p-7pc4-xj5r	vercel>undici
fast-uri	3.1.6	3.1.8	GHSA-qw65-cvwx-89v3, GHSA-58mr-gqgx-xq4g (high), GHSA-hrr3-gc8f-f4qj	vercel>…>ajv>fast-uri
brace-expansion	1.1.18 / 5.0.9	1.1.21 / 5.0.12 (2.x floor 2.1.7)	GHSA-6j4f-fj2g-mc7p, GHSA-qhr7-859c-m2p7 (high), GHSA-q2hr-2g5m-vwhr	vercel>…>ts-morph, sigstore>…>glob
http-cache-semantics	4.2.0	4.3.0	GHSA-ch52-4w7c-c8xp (high, "through 4.2.0")	sigstore>…>make-fetch-happen
source-map-js	1.2.1	1.2.2	GHSA-68fv-2mgg-jv7q (high)	nextjs>@tailwindcss/postcss>…

The lockfile diff is 66 lines and only touches these packages.

Why

pnpm audit on main reports 15 findings (10 high, 4 moderate, 1 low), all from advisories published September 18–29. Most sit behind existing exact override pins, which Dependabot can't move, so no Dependabot PR was opened for them. I found this while checking the Next.js/sharp advisories for #299. Those two are already patched on main (next@16.3.8, sharp@0.35.5).

After this change pnpm audit reports one finding: braces ≤3.0.3 (GHSA-vfj7-8cjw-p6xm, high, stack-exhaustion DoS). It has no fixed release (3.0.3 is the latest), and it's only reachable through deploy tooling (vercel>@vercel/backends>ts-morph>@ts-morph/common>fast-glob>micromatch>braces), which processes trusted repository input. It's documented in the CHANGELOG rather than suppressed.

Checklist

• pnpm next:lint, pnpm next:grammar, pnpm next:test, pnpm convex:test, pnpm convex:typecheck, pnpm -C nextjs build
• pnpm deps:provenance (Sigstore path with the bumped deps; verified vercel@58.4.4), pnpm ops:test, node scripts/check-osv-exceptions.mjs, vercel --version / vercel build --help smoke (same exit code as main)
• pnpm ingest:lint, pnpm ingest:test: not affected
• CHANGELOG.md updated under Unreleased

  

Summary by Sourcery

Patch vulnerable transitive dependencies and reduce the remaining audit findings to an unfixed advisory in trusted Vercel tooling.

Bug Fixes:

• Update transitive dependency pins to patched releases to address known security advisories across Vercel CLI, Sigstore, and Tailwind dependency trees.

Documentation:

• Document the dependency security updates and the remaining unfixed braces advisory in the unreleased changelog.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated
betterman	Ready	Preview	Oct 10, 2026 9:18pm UTC

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Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

This dependency-maintenance PR updates pnpm workspace overrides so vulnerable transitive packages resolve to patched versions across the Vercel CLI, Sigstore, and Tailwind dependency trees, regenerates the focused lockfile changes, and documents the single remaining advisory without a fix.

Flow diagram for dependency advisory remediation

flowchart TD
    Audit[pnpm audit reports vulnerable transitive packages] --> Overrides[Raise pnpm workspace override floors]
    Overrides --> Lockfile[Regenerate focused lockfile]
    Lockfile --> Patched[Five dependency families resolve to patched versions]
    Patched --> Verify[Run dependency provenance and project checks]
    Verify --> Remaining[One unfixed braces advisory remains]
    Remaining --> Document[Document remaining advisory in CHANGELOG]

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File-Level Changes

Change	Details	Files
Raise workspace override floors and exact pins for patched transitive dependency versions.	Update undici and fast-uri pins used by Vercel/AJV dependency paths. Add patched floors for brace-expansion major versions, http-cache-semantics, and source-map-js. Regenerate the lockfile, limited to the affected dependency entries.	pnpm-workspace.yaml pnpm-lock.yaml
Document the dependency security remediation and the remaining unfixable advisory.	Record patched versions and affected dependency trees in the Unreleased changelog. Explain that braces 3.0.3 remains reachable through Vercel tooling because no fixed release exists.	CHANGELOG.md

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