chore(deps): bump dompurify from 3.3.3 to 3.4.1 in /gui

[dependabot]

Bumps dompurify from 3.3.3 to 3.4.1.

Release notes

Sourced from dompurify's releases.

DOMPurify 3.4.1

• Fixed an issue with on-handler stripping for HTML-spec-reserved custom element names (font-face, color-profile, missing-glyph, font-face-src, font-face-uri, font-face-format, font-face-name) under permissive CUSTOM_ELEMENT_HANDLING
• Fixed a case-sensitivity gap in the annotation-xml check that allowed mixed-case variants to bypass the basic-custom-element exclusion in XHTML mode
• Fixed SANITIZE_NAMED_PROPS repeatedly prefixing already-prefixed id and name values on subsequent sanitization
• Fixed the IN_PLACE root-node check to explicitly guard against non-string nodeName (DOM-clobbering robustness)
• Removed a duplicate slot entry from the default HTML attribute allow-list
• Strengthened the fast-check fuzz harness with explicit XSS invariants, an expanded seed-payload corpus, an additional idempotence property for SANITIZE_NAMED_PROPS, and a negative-control assertion ensuring the invariants actually fire
• Added regression and pinning tests covering the above fixes and two accepted-behavior contracts (SAFE_FOR_TEMPLATES greedy scrub, hook-added attribute handling)
• Extended CodeQL analysis to run on 3.x and 2.x maintenance branches

DOMPurify 3.4.0

Most relevant changes:

• Fixed a problem with FORBID_TAGS not winning over ADD_TAGS, thanks @​kodareef5
• Fixed several minor problems and typos regarding MathML attributes, thanks @​DavidOliver
• Fixed ADD_ATTR/ADD_TAGS function leaking into subsequent array-based calls, thanks @​1Jesper1
• Fixed a missing SAFE_FOR_TEMPLATES scrub in RETURN_DOM path, thanks @​bencalif
• Fixed a prototype pollution via CUSTOM_ELEMENT_HANDLING, thanks @​trace37labs
• Fixed an issue with ADD_TAGS function form bypassing FORBID_TAGS, thanks @​eddieran
• Fixed an issue with ADD_ATTR predicates skipping URI validation, thanks @​christos-eth
• Fixed an issue with USE_PROFILES prototype pollution, thanks @​christos-eth
• Fixed an issue leading to possible mXSS via Re-Contextualization, thanks @​researchatfluidattacks and others
• Fixed an issue with closing tags leading to possible mXSS, thanks @​frevadiscor
• Fixed a problem with the type dentition patcher after Node version bump
• Fixed freezing BS runs by reducing the tested browsers array
• Bumped several dependencies where possible
• Added needed files for OpenSSF scorecard checks

Published Advisories are here: https://github.com/cure53/DOMPurify/security/advisories?state=published

Commits

• 5b0cdbb chore: merge main into 3.x for 3.4.1 release (#1301)
• 09f5911 test: added three more browsers to test setup (OSX, mobile)
• 5b16e0b Getting 3.x branch ready for 3.4.0 release (#1250)
• See full diff in compare view

Install script changes

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

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Summary by cubic

Upgrade dompurify in gui to 3.4.1 to bring security hardening and bug fixes for custom elements, template sanitization, and XSS robustness.

• Dependencies
  • Update dompurify 3.3.3 → 3.4.1
  • Includes security fixes (prototype pollution, mXSS) and sanitizer bug fixes
  • Note: package adds a prepare script that runs on install

^{Written for commit 843df6c. Summary will update on new commits.}

[continue]

Docs Review: No documentation updates needed.

This is an internal dependency bump for dompurify (3.3.3 → 3.4.1), which is used for HTML sanitization within the GUI. Since this doesn't change any user-facing APIs, configuration options, or features, no updates to the Continue Docs are required.

[cubic-dev-ai]

No issues found across 2 files