fkie_cve-2026-106102

Quasar Framework is a framework for building high-performance Vue.js user interfaces. Prior to 2.22.0, the SSR-only getHead() serializer in ui/src/plugins/meta/Meta.js used getAttr() to interpolate values supplied through useMeta() into title, meta, link, and script markup without HTML text or quoted-attribute encoding. injectServerMeta() appended that output to the raw server-rendered response. An attacker who can influence dynamic page metadata, such as a post title, product name, excerpt, or display name, can terminate the intended HTML context and inject executable markup before hydration. The client-side apply() path is not affected because it uses DOM APIs that encode attributes. This issue is fixed in version 2.22.0.

GHSA-pq96-jpmf-w254 — Quasar Framework: Stored/Reflected XSS via unescaped SSR meta tag rendering in getHead()

Affected: npm: quasar

## Vulnerability Details

**File**: `ui/src/utils/meta/Meta.js` — actually `ui/src/plugins/meta/Meta.js` (lines 149-176: `getAttr()` and `getHead()`) **Sink**: `injectServerMeta()` (same file) → `ctx.headTags += getHead(data)`, interpolated verbatim into the raw HTTP response `<head>` by the production SSR template (`app-vite/templates/entry/ssr-prod-webserver.js` + `app-vite/lib/plugins/vite.html.js`) **Entry point**: the public `useMeta()` composable (`ui/src/composables/use-meta/use-meta.js`) — the single documented way apps set page title/meta/link/script tags

### Root Cause `getHead()` is Quasar's SSR-only serializer that turns the meta/link/script/title data collected from every `useMeta()` call into a literal HTML string, using plain template-literal interpolation with **zero HTML-entity escaping and zero attribute-quote escaping**:

```js function getAttr(seed) { return att => { const val = seed[att] return att + (val !== true && val !== void 0 ? `="${val}"` : '') } }

function getHead(meta) { let output = '' if (meta.title) { output += `<title>${meta.title}</title>` } ... } ```

Contrast this with the client-side equivalent, `apply()` (same file, used only in the browser post-hydration), which builds the same tags via `document.createElement(...)` + `tag.setAttribute(att, val)` — the browser DOM API automatically escapes attribute values, so **the client-side path is not vulnerable**. `getHead()` is a separate, parallel implementation for th…

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fkie_cve-2026-106102

GHSA-pq96-jpmf-w254 — Quasar Framework: Stored/Reflected XSS via unescaped SSR meta tag rendering in getHead()