DOMPurify <=3.3.1 (and the mermaid-transitive 3.3.3) carry ~18 disclosed
sanitizer-bypass/XSS advisories, including GHSA-cj63-jhhr-wcxv
(CVE-2026-65913): with USE_PROFILES enabled, ALLOWED_ATTR is rebuilt as a
plain array and looked up via ALLOWED_ATTR[lcName], so a polluted
Array.prototype property (e.g. onclick) is treated as an allow-listed
attribute and survives sanitization -- this app calls
DOMPurify.sanitize(svg, { USE_PROFILES: { svg: true, svgFilters: true } })
in src/utils/sanitize.ts, whose output is rendered via v-html in
ImageUpload.vue's SVG upload preview.
Bumped to 3.4.14 (latest, OSV-clean) and pinned via pnpm.overrides so the
mermaid-transitive copy dedupes to the same patched version instead of
staying pinned at 3.3.3. Lockfile-only regen via pnpm 9, no other package
changes.
