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ASE-538: pin mermaid 11.15.0 for gantt DoS alert 67 - #821
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What changed
pnpm.overrides.mermaidto11.15.0inweb/package.jsonweb/pnpm-lock.yamlso thestreamdown-sveltedependency chain resolvesmermaid@11.15.0web/scripts/check-security-overrides.mjsso CI blocks future vulnerable mermaid downgradesweb/scripts/verify-mermaid-gantt-no-hang.mjsplus a Vitest regression to verify hostile ganttexcludesinput completes quickly instead of hangingWhy
Dependabot alert 67 (
GHSA-6m6c-36f7-fhxh/CVE-2026-41150) flagged the transitive runtimemermaidversion used by markdown rendering. Vulnerable versions up to11.14.0can loop indefinitely on malicious ganttexcludesinput, creating a DoS path anywhere untrusted Mermaid diagrams are rendered.Impact
Markdown surfaces that render Mermaid diagrams now resolve the patched runtime dependency and keep a regression check around the hostile gantt payload that originally triggered the alert.
Validation
cd web && PATH=$HOME/.nvm/versions/node/v22.22.1/bin:$PATH pnpm exec prettier --check package.json scripts/check-security-overrides.mjs scripts/verify-mermaid-gantt-no-hang.mjs src/lib/features/markdown/mermaid-gantt-security.test.tscd web && PATH=$HOME/.nvm/versions/node/v22.22.1/bin:$PATH pnpm run check:security-overridescd web && PATH=$HOME/.nvm/versions/node/v22.22.1/bin:$PATH pnpm run lint:depscd web && PATH=$HOME/.nvm/versions/node/v22.22.1/bin:$PATH pnpm vitest run src/lib/features/markdown/markdown-content.test.ts src/lib/features/markdown/mermaid-gantt-security.test.tscd web && PATH=$HOME/.nvm/versions/node/v22.22.1/bin:$PATH node scripts/verify-mermaid-gantt-no-hang.mjscd web && PATH=$HOME/.nvm/versions/node/v22.22.1/bin:$PATH pnpm run build