Bump undici and wrangler

[dependabot]

Bumps undici to 7.28.0 and updates ancestor dependency wrangler. These dependencies need to be updated together.

Updates undici from 5.20.0 to 7.28.0

Release notes

Sourced from undici's releases.

v7.28.0

⚠️ Security Release

This release line addresses 7 security advisories, all shipped in v7.28.0.

Action required: Upgrade to undici 7.28.0 or later.

npm install undici@^7.28.0

The v7 line is not affected by GHSA-38rv-x7px-6hhq (CVE-2026-9675), which is an 8.x-only regression.

Note on GHSA-hm92-r4w5-c3mj: this fix shipped in v7.28.0, not the earlier 7.2x line — the vulnerable single-pool code was still present through v7.27.2. The per-origin pool fix is 3805b8f8 (#5041).

Summary

Advisory	CVE	Severity (CVSS)	Fixed in	Fix commit
GHSA-vxpw-j846-p89q	CVE-2026-12151	High (7.5)	7.28.0	8cb10f98
GHSA-vmh5-mc38-953g	CVE-2026-9697	High (7.4)	7.28.0	04201f89
GHSA-hm92-r4w5-c3mj	CVE-2026-6734	High (7.5)	7.28.0	3805b8f8
GHSA-pr7r-676h-xcf6	CVE-2026-9678	Moderate (5.9)	7.28.0	85a24055
GHSA-p88m-4jfj-68fv	CVE-2026-9679	Moderate (5.9)	7.28.0	d0574cc4
GHSA-g8m3-5g58-fq7m	CVE-2026-11525	Low (3.7)	7.28.0	d0574cc4
GHSA-35p6-xmwp-9g52	CVE-2026-6733	Low (3.7)	7.28.0	ea8930cf

---

High severity

WebSocket DoS via fragment count bypass — CVE-2026-12151

GHSA-vxpw-j846-p89q · CWE-400, CWE-770 Fix: 8cb10f98 websocket: limit the number of fragments in a message (part of backport a027a4a0 Backport WebSocket maxPayloadSize fixes to v7.x, #5423)

A malicious WebSocket server can stream a large number of small or empty continuation frames. Undici enforced a limit on cumulative payload size but did not limit the number of fragments per message, leading to unbounded memory growth and denial of service.

• Affected: applications using new WebSocket(...) or WebSocketStream against untrusted endpoints.
• Workaround: none — upgrade is required.

TLS certificate validation bypass in SOCKS5 ProxyAgent — CVE-2026-9697

GHSA-vmh5-mc38-953g · CWE-295

... (truncated)

Commits

• f9eba0a Bumped v7.28.0 (#5430)
• a027a4a Backport WebSocket maxPayloadSize fixes to v7.x (#5423)
• 8cb10f9 websocket: limit the number of fragments in a message
• 04201f8 fix: honor requestTls when proxy is SOCKS5
• fcd642f fix(socks5): preserve dispatch backpressure return value (#5166)
• bc98c97 fix(socks5): use configured connector in Socks5ProxyAgent (#5168)
• 9e1c743 fix(socks5): encode embedded IPv4 tails in IPv6 literals correctly (#5099)
• 376c8be fix(socks5): enforce authenticated state before CONNECT (#5097)
• 3805b8f fix(socks5-proxy-agent): use per-origin pools to prevent cross-origin routing...
• 85a2405 fix(cache): trim qualified field names
• Additional commits viewable in compare view

Maintainer changes

This version was pushed to npm by GitHub Actions, a new releaser for undici since your current version.

Install script changes

This version modifies prepare script that runs during installation. Review the package contents before updating.

Updates wrangler from 2.12.0 to 4.104.0

Release notes

Sourced from wrangler's releases.

wrangler@4.104.0

Minor Changes

• #14369 e312dec Thanks @​edmundhung! - Add getEnv() to createTestHarness() Worker handles

  Tests can now access the full env object for a Worker with await server.getWorker<Env>().getEnv(), including vars, secrets, and bindings.

Patch Changes

• #14364 a085dec Thanks @​dependabot! - Update dependencies of "miniflare", "wrangler"

  The following dependency versions have been updated:

  Dependency	From	To
  workerd	1.20260617.1	1.20260619.1

• #14383 9a0de8f Thanks @​dependabot! - Update dependencies of "miniflare", "wrangler"

  The following dependency versions have been updated:

  Dependency	From	To
  workerd	1.20260619.1	1.20260621.1

• #14397 fab565f Thanks @​dependabot! - Update dependencies of "miniflare", "wrangler"

  The following dependency versions have been updated:

  Dependency	From	To
  workerd	1.20260621.1	1.20260623.1

• #14388 3f02864 Thanks @​petebacondarwin! - Stop erroring when find_additional_modules discovers a file that only matches a inactive module rule

  Module rules assign module types to imported files — they are not include/exclude filters. Also, setting fallthrough: false in a rule will cause subsequent rules to become inactive. Previously, when find_additional_modules walked the filesystem and discovered a file whose only matching rule is inactive, Wrangler would throw an error and fail the build.

  This meant that adding a user rule like the one below would break the build for any .txt, .html, .sql, .bin or .wasm file that didn't match the user-supplied globs but lived somewhere under the module root:

  // wrangler.json
  {
    "rules": [
      {
        "type": "Text",
        "globs": ["html/includeme.html"],
        "fallthrough": false
      }
    ]
  }

... (truncated)

Commits

• ec856a1 Version Packages (#14370)
• fab565f Bump workerd from 1.20260621.1 to 1.20260623.1 in the workerd-and-workers-typ...
• 07cd86c [wrangler] Consolidate vi.mock calls for @​cloudflare/autoconfig in entry-poin...
• e312dec feat(wrangler): add getEnv to worker handle (#14369)
• 2a02858 [wrangler] fix: don't require private credential when reusing an existing Sec...
• 3f02864 [wrangler] Don't error when find_additional_modules discovers a file matching...
• 9a0de8f Bump the workerd-and-workers-types group with 2 updates (#14383)
• a085dec Bump the workerd-and-workers-types group with 2 updates (#14364)
• 4d8ffcb Version Packages (#14353)
• 7649895 move auto provisioning to deploy-helpers (#14354)
• Additional commits viewable in compare view

Maintainer changes

This version was pushed to npm by GitHub Actions, a new releaser for wrangler since your current version.

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

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[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	wrangler@​2.12.0 ⏵ 4.104.0	+1	+75	-5	+46

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[socket-security]

Warning

Review the following alerts detected in dependencies.

According to your organization's Security Policy, it is recommended to resolve "Warn" alerts. Learn more about Socket for GitHub.

Action	Severity	Alert  (click "▶" to expand/collapse)
Warn		Obfuscated code: npm @emnapi/runtime is 90.0% likely obfuscated Confidence: 0.90 Location: Package overview From: package-lock.json → npm/wrangler@4.104.0 → npm/@emnapi/runtime@1.11.1 ℹ Read more on: This package | This alert | What is obfuscated code? Next steps: Take a moment to review the security alert above. Review the linked package source code to understand the potential risk. Ensure the package is not malicious before proceeding. If you're unsure how to proceed, reach out to your security team or ask the Socket team for help at support@socket.dev. Suggestion: Packages should not obfuscate their code. Consider not using packages with obfuscated code. Mark the package as acceptable risk. To ignore this alert only in this pull request, reply with the comment @SocketSecurity ignore npm/@emnapi/runtime@1.11.1. You can also ignore all packages with @SocketSecurity ignore-all. To ignore an alert for all future pull requests, use Socket's Dashboard to change the triage state of this alert.

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