[dependabot]

Bumps happy-dom from 20.14.0 to 21.0.4.

Release notes

Sourced from happy-dom's releases.

v21.0.4

👷‍♂️ Patch fixes

• Fixed a code injection vulnerability in the ESM compiler - By @​capricorn86
• Fixed cross-origin isolation so opaque-origin data: iframes cannot access their parent or top window - By @​capricorn86

v21.0.3

👷‍♂️ Patch fixes

• Fixes security vulnerability where authorization header was forwarded when redirecting - By @​capricorn86

v21.0.2

👷‍♂️ Patch fixes

• Fixes SSRF security vulnerability by doing a target-origin bypass in the proxy server in @​happy-dom/server-renderer - By @​capricorn86

v21.0.1

👷‍♂️ Patch fixes

• Adds aliases --css and --iframe for enabling CSS and iframe loading to @​happy-dom/server-renderer - By @​capricorn86

v21.0.0

💣 Breaking Changes

• Disables CSS and IFrame loading by default to prevent server-side request forgery (SSRF) - By @​capricorn86
  • An attacker could embed <iframe> or <link rel="stylesheet"> elements in untrusted HTML to make Happy DOM send HTTP requests from the server to attacker-chosen URLs, including internal services. This could allow access to otherwise unreachable endpoints or trigger unintended actions, depending on the application and its network access.
  • The settings property disableCSSFileLoading has been deprecated
  • Added the new settings properties enableCSSFileLoading and enableIframePageLoading
  • If you don't believe that you are at risk, you can keep the same behavior as in <=v20.14.6 by sending in { enableCSSFileLoading: true, enableIframePageLoading: true } as broswer settings (e.g. new Window({ settings }));

v20.14.6

👷‍♂️ Patch fixes

• Fixes cookie scope forgery vulnerability - By @​capricorn86

v20.14.5

👷‍♂️ Patch fixes

• Preserve character references in comment data - By @​hampustagerud in task #2409

v20.14.4

👷‍♂️ Patch fixes

• End comments at the first comment end tag when it overlaps a comment start tag - By @​hampustagerud in task #2407

v20.14.3

👷‍♂️ Patch fixes

• Avoids cloning all properties in CSSPropertyManager.toString - By @​erictheswift in task #2363

v20.14.2

👷‍♂️ Patch fixes

• Fixes regression where not all CSS variables where resolved in getComputedStyle() - By @​klaesra in task #2344

v20.14.1

👷‍♂️ Patch fixes

• Invalidate the computed style cache for the whole subtree - By @​matmannion and @​capricorn86 in task #2366

Commits

• fd16352 fix: Fixed a code injection vulnerability in the ESM compiler (#2537)
• 75ab0fb fix: Fixed cross-origin isolation so opaque-origin data: iframes cannot acces...
• 875ef5c fix: Fixes security vulnerability where authorization header was forwarded wh...
• 1f3ffdf fix: Fixes SSRF security vulnerability by doing a target-origin bypass in the...
• f55c7e0 chore: Update security documentation (#2509)
• 2b91e68 fix: Adds alias for enabling CSS and iframe loading in server-renderer (#2503)
• 0a99c75 BREAKING CHANGE: Disables CSS and IFrame loading by default (#2502)
• f21dbd7 fix: Fixes cookie scope forgery vulnerability (#2477)
• 0d4cdbe fix: #2409 Preserve character references in comment data (#2410)
• 9c920a4 fix: #2407 End comments at the first comment end tag when it overlaps a com...
• Additional commits viewable in compare view

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[monoscope-bot]

Monoscope production impact · Coverage unknown

Project 87576849-4941-49d3-a15d-680fef88a1a8 · reviewed 56c6299fc15e4e416a73dc5c80ade4b3e6ef5722 · advisory

Evidence window (UTC): 2026-10-19 08:35:28.842766614 UTC → 2026-10-26 08:35:28.842766614 UTC

Coverage: Evidence is capped at 20 service/environment groups, monitors and dashboard queries. Telemetry describes the mapped service, not a proven changed-path or deployed-revision match. Monitor and dashboard references are project-wide; their relationship to the mapped service is unverified. No evidence links the web-components package or this development-only dependency to the mapped production service or deployed revision; telemetry-1 is insufficient for that match. No test, build, or runtime evidence was provided showing whether the happy-dom upgrade affects compatibility, execution time, memory use, or production artifact contents.

Review history and settings

[tonyalaribe]

Superseded by #734, which applies this update together with the other npm bumps.

[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.